SO Optimization of server infrastructure. SO Optimization of Server Infrastructure Technical Optimization Solutions for Servers

To increase server performance, you can use several ways, but the best is optimization.

Operating System Optimization (FreeBSD)

Transition to 7.x. It is useful for multi-core systems, as you can use the new ULE 3.0 Scheduler and Jelloc. If you apply the Legacy 6.x system and it does not cope with the loads, then it's time to make a transition to 7.x.
Transition to 7.2. Allows you to increase KVA, optimize the SYSCTL default and apply SuperPages. The new FreeBSD 8.0 is already preparing, which will help significantly increase productivity.
Transition to AMD64. It makes it possible to increase the volumes of KVA and Shared Mem more than 2GB. It is necessary to create conditions for the development of the server, because the database is constantly increasing and require large sizes.
Unloading the network subsystem FreeBSD will help optimize the server. This process can be made in two stages: Tuning Ifconfig parameters and SYSCTL.CONF / LOADER.CONF settings. At the preparation stage, check the capabilities of the network card. Drivers from Yandex will help increase the speed due to the involvement of multiple threads, they are often used for multi-core processes. For a third-rate network card, the best solution will be POLLING. The latest updated version of the FreeBSD 7 tuning will help solve the task.
FreeBSD and a huge number of fileswonderful thanks to the caching of file names in the directory. Search by hash table will help you quickly find the desired file. Although the maximum number of memory is about 2mb, it is possible to increase it while VFS.UFS.DIRHASH_MEM allows you to.
SoftUpdates., gjournal andmount options. - These are new terabyte screws that have excellent performance. When the power is disconnected, their FSCK will take a lot of time, so you can use softwareupdates or manufacture journaling via Gjournal.

Front Optimization (NGINX)

This species can be attributed in premature optimization, although it will help to increase the general Response Time site. Among standard optimizations should pay attention to reset_timedout_connection; Sendfile; TCP_NOPUSH and TCP_NODELAY.

Accept Filters. - This is a technology that makes it possible to transmit information from the kernel to the process in case of new data or receiving a validating HTTP request. These filters will help to unload the server with a huge number of connections.
Caching NGINX is characterized by flexibility, and is made from FastCGI or from Proxy Backen. Each can be smart to use caching in its project.
AIO. It is very useful with some specific loads on the server, because it saves the Response Time, while the number of wakes is reduced. New versions of NGINX make it possible to use the AIO tandem with Sendfile.

Optimization backend

APC. - This is a framework that allows you to reduce the load due to the caching of the compiled code in the OP. APC Locking should be updated, as it can brake and instead of APC, many begin to apply Eaccelerator. It is worth replacing the locking on Spinlock or Pthread Mutex. The APC Hints value should be raised with a huge amount of files. Filephp files or when caching is frequent in APC User Cache. APC Fragmentation is a sign that you apply APC is not intended. It cannot independently delete TTL or LRU entries.
PHP 5.3. It will help to increase productivity growth, so it is worth updating the PHP version, although the list of deplecated functions can scare many.

Database optimization

Ideas for improving the work of MySQL have a lot on the Internet, because each web project is sooner or later faced with the limitations of memory, disk or processor. Therefore, simple solutions will not help to cope with the problem, it is worth paying more time to profileers (Dtrace, Systemtap and Oprofile), as well as to use a large number of additional software. It is necessary not only to be able to use indexes to use indexes, to produce their sorting and grouping, but also know how it all functions inside MySQL. You also need to know the advantages and disadvantages of different Storage Engine, understand the Query Cache and Explain.

There are several ways to optimize MySQL, and even without codes changes, because half the server tuning can be carried out in semi-automatic mode using the TUNINGPRIMER, MYSQLTUNER and MYSQLSLA utilities.

Transition to 5.1. Gives many advantages, among which it is worth highlighting the optimizer optimizer, Partitioning, InnoDB Plugin and Row based Replication. To speed up the site, some extremals are already tested by version 5.4.
Transition to Innodb. Gives many advantages. It is compatible with ACID, so any operation is performed using just one transaction. It has Row-Level Locking, which makes it possible to simultaneously read and record many streams isolated from each other.
Built-in Mysql - Query Cache It is quite difficult for understanding, so many users use it irrational or disconnect. For him no longer means better, so you should not bring this subsystem to the maximum. Query Cache is parallel, as a result, when using more than eight processes, it will only slow down the entire process, and not help reduce the site loading time. The contents of this subsystem, which relates to a specific table, is canceled by change in this table. This means that Query Cache gives a positive result only when using competently composed tables.
Indexes can be harmful both for SELECT (in their absence) and for Insert / Update (if unnecessary). The index that is no longer used is still the memory and thereby slows down changes. To cope with this problem, you should use a simple SQL query.

PostgreSQL

The Postgres system is quite versatile, because it refers to the Enterprise class and does Skype work perfectly on it, but at the same time it can be installed even on a mobile phone. Among the 200 parameters available, 45 of them are the main and are responsible for tuning.

On the Internet you can find a lot of useful information on Tuning Postgres. But some articles are already outdated, so you should be repeated from the date of publication and pay attention to the information where the Vacuum_mem key is used, or in new versions of Maintenance_mem. Advanced programmers will be able to find a lot of high-quality treatises, then we will list only those foundations that will help the usual user to improve their project.

Indexes PostgreSQL is always in the first place, while MYSQL always occupy recent positions and this can be explained by the fact that PostgreSQL indexes have enormous features. The programmer must fine-oriented in such indexes, and to know when and what should be used as Gist, Gin, Hash and B-Tree, as well as Partial, Multicolumn and On Expressions.
pgbouncer And its alternatives must first be installed on the server with the database. Without the presence of connections bullet, each request creates a separate process that is used by RAM. It seems that nothing is terrible, but when creating more than 200 connections, even a very powerful server hardly copes with the processing of information. PgBouncer helps to cope with this problem.
pgfouine It is an indispensable program, since it can be bolded to call the analogue of MySQLSLA on PHP. In Tandem with Playr, it can optimize requests in difficult conditions on staging servers.

Database unloading

To optimize the database and increase its performance, it should be used as little as possible.

SphinXQLyou can use as a MYSQL server. To do this, you just need to create Sphinx.conf, as well as entries for indexer in CRON and switch to another base. With these actions, there is no need to change the code. The transition to SphinxQL will help increase the speed and quality of the search, as well as forget about Myisam and FTS.
Non-rdbms storage Allows you not to apply the relational database. You can stop your choice on Hive or Oracle. Database KEY-VALUE Due to its speed applies samples from relational bases for further caching. The owners of large projects on PHP can use the excellent OPCODE Cache ability to store all custom data. With it, it is possible to reliably save even changes in global value, because they occupy little space and practically do not take memory, as well as the sampling speed to significantly increase. If for a large project a block of global change to record only one machine, then the traffic grows, and it begins to slow down. To solve this problem, it is necessary to store global variables in Opcode Cacher or make cloning variables across all servers and in the Consistentcy Hashing algorithm to register exceptions.
Coding Active database unloading methods are applied. It is worth noting, UTF-8 is an excellent choice, but in Russian it takes a lot of space, so for a single-speaking contingent, you should first think about the rational use of the encoding.
Asynchrony will help reduce the response time of the application or site, and also significantly reduce the load on the server itself. Batch requests are produced much faster than familiar single. For huge projects, you can use RabbitMQ, ApacheMQ or Zeromq messages, and only CRON can be used for small.

Additional optimization applications

SSHGUARD or its alternative It is standard practice for SSH. Anti-bruthfors help create reliable server protection from bots attacks.
Xtrabackup. From Percona is a wonderful tool for MySQL backup, which has a lot of settings. But the ideal solution is still worth named clones in ZFS, because they are created very quickly, and to produce the database, it is enough to change the paths to the files in the muscle configuration. Clones allow you to restore the system from scratch.
Mail transfer to another host Allows you to save traffic and IOPS if your server just fall asleep spam.
Third-party integration It will help to optimize MySQL server. For example, you can use the SMTP / IMAP bundle to exchange messages, which will not take a lot of memory. To create a chat, it is enough to use the base of the Jabber server with the JavaScript client. These systems that are created on the basis of adapters to finished products are distinguished by the excellent possibility of scaling.
Monitoring is a very important component, because it is impossible to optimize something without detailed analysis. It is necessary to follow the performance metrics, free resources and delays, this will help Zabbix, Cacti, Nagios and other tools. Web Performance Test allows you to calculate the download speed of the site or project, so it helps a lot when monitoring. When configuring the server Performance, remember that only thorough analysis will help eliminate all problems that have arisen and optimize.

Did not understand half of the written - not trouble.

", The direction of the" data transmission system ".

Before going into technical subtleties of WAN-optimization, let's figure it out what it is for what is intended.

Recently, the migration of IT structures to a decentralized computing model was obvious, in which companies distribute their processing centers around the world. As a result, the amount of data and the number of IT resources stored outside the corporate data centers (data center) have increased, and now the heads of divisions are looking for ways to consolidate their IT infrastructure. Enterprises realized the advantages that consolidate in terms of decreasing infrastructure complexity, cost reduction, improving the use of resources and data protection.

The centralization of resources and data demonstrates the above-described advantages, but there are various "pitfalls", which should keep in mind organizations planning to optimize IT infrastructure. One of the problems with which they will encounter, this is a decrease in application performance. The popularity of the distributed calculation model was mainly due to the need to keep IT resources as close as possible to the distributed network users to ensure maximum performance. The consolidation of servers in the center changes the resource allocation scheme to the exact opposite and therefore the performance of many applications is worsening.

To solve the problem of the organization, the bandwidth of WAN channels is expanding, trying to reduce the response time. After that, it is found that the channel expansion practically does not have (or has minimally) influences on the speed of applications, since the problem is a large data transfer over the channel and the use of ineffective to work with WAN protocols. In addition, the expansion of the bandwidth outside of Moscow may be generally economically ineffective. And just for such tasks, the WAN-channel optimization equipment is used.

Globally, such WAN optimization solutions can reduce the costs of organizations in several ways:

reduce the capacity of the bandwidth of communication channels. In fact, organizations will be able to do without acquiring additional bandwidth, which is for many companies a key condition when starting the projects for the implementation of WAN optimizers;

consolidate infrastructure in the data center. Companies can be removed from remote offices a significant part of the IT infrastructure (file and mail servers, software distribution servers, SharePoint portals, ribbon drives, etc.) without loss in performance and manageability;

simplify the infrastructure of the remote office. Some manufacturers offer in their devices a software platform that allows users to place some remaining after the Code consolidation, services (for example, a print server, DHCP server, file services) directly on the optimization device. This makes it possible to reduce operating costs even more.

What is WAN-Optimization? Solving network application optimization uses client-server architecture and session principle of operation of network applications. The main task is to optimize application sessions. In fact, this is a set of devices to improve the operation of applications installed in the center and in each regional (local) office of the company. They pass through themselves all traffic, "intercepting" and optimizing application sessions.

There is a number of manufacturers offering solutions in the field of transmitting traffic on extended WAN channels. The most famous of them in the Russian market includes Riverbed (with the product Steelhead), Cisco (WAAS product), Juniper (WXC product) and BlueCoat (ProxySG product).

The process of optimizing the equipment offered by them is based on about the same mechanisms to which data compression, caching, optimization of the TCP protocol and optimization of the logic of the functioning of the business applications themselves.

All applications optimization mechanisms under consideration use session segmentation, breaking it between the client and the server to three segments: between the optimization device and the workstation, between the devices, over the WAN network, and between the optimization and the data center (server). In the first and third segments, the session works on top of the LAN, and the TCP protocol flaws do not affect the declaration of applications. The second segment is optimized by TCP speed adjustment. As a result, the necessary minima is provided: delayed the transmission of traffic via WAN and the response time of applications. Consider mechanisms that are based on solutions of each of the manufacturers of optimizers in one form.

Compression mechanismscapable to accelerate the transfer of data by increasing the informativeness of information transfer per unit of time. Most often, data transmitted over the network is presented in non-optimal format and have an unnecessarily large volume. Now, with active use in the development of applications, for example, the XML language or other language reporting languages \u200b\u200bin the text form, there is no need to take care of the presentation of the data. This increases the speed and ease of development, but at the same time leads to the fact that the network is transmitted, in fact, unstructured data, making large amounts of redundancy into traffic.

Traffic compression allows you to eliminate this disadvantage. Application optimization devices use algorithm to compress data without loss (for example, lempel-ziv) and an algorithm for excluding repetitive blocks. The combination of these two algorithms makes it possible to achieve the highest degree of compression of information without loss, thereby ensuring the rapid transmission of information even at relatively low-speed channels.

Compression functional, in one form or another, is almost every modern router and, in fact, with it, and the way modern optimizers started. Very often, network administrators believe that this is the notorious optimization, convincing its managers in the absence of the need for procurement of special devices. And they are mistaken in this, as we will see on.

Caching mechanisms Also help reduce traffic transmitted. In a distributed network, there are often situations when all company employees need to pass the same data. For example, when updating software products or anti-virus software databases, transferring access to the company's manual, multimedia files and training programs, general use libraries. The use of optimization devices allows you to cache this information, that is, one time to transfer it via WAN, and subsequently provide each user locally (from a hard disk of the nearest optimization device), and not with a remote global resource.

An important difference from ordinary caching devices is the fact that optimizers split information into parts / blocks and are already saved to the hard disk. It is interesting from the point of view that if we change part of the information in a newly transmitted file (for example, insert a slide or picture into a document), it will be transmitted precisely a change, and not the entire entire file. The mechanisms of dynamic partitioning of the transmitted information on blocks and tracking changes are proprietary and not subject to disclosure. If we talk about the features of the work, then manufacturers use 2 approaches. A distinctive feature of the first of them is its uniformity, i.e. When transferring one file to different branches in the central optimizer, only one copy of the file for all remote optimization devices will be saved. In the second case, the hard disk space is dynamically divided in proportion to the number of remote offices (remote optimizers), and in the case of transferring one file to all branches, a similar copy will be reflected in each segment of the hard disk, "responding" for its branch.

Obviously, the caching mechanism works in a pair with a compression mechanism. It is thanks to these two mechanisms that manufacturers of optimizers show beautiful graphs, where the optimization level can reach 150-200x. We managed to obtain the same data during multiple shipments of the same surround data file, since after the first transmission it was saved to the device cache and then only kilobytes of links indicating the location of the file in the hard disk are passed. Here immediately arises a logical question - what is the volume of the hard disk and is it possible to connect external storage facilities to optimizers? Some manufacturers somehow mentioned the possibility of the appearance of this kind of equipment (but it will already be intended exclusively for installation in the data center).

TCP optimization mechanisms Work at the transport level. This is the main "battlefield" of manufacturers of optimizers before they have become "climbing" at levels above (applied). TCP transport protocol was developed in 1980, and today has not undergone major changes, while data transmission technologies have changed seriously. If the packages are loss, the standard TCP protocol sharply reduces the speed - almost twice, and its increases from this level in the future occurs linearly and small steps. Therefore, even a relatively small level of packet loss (2-3% of losses are considered normal), leads to frequent and sharp losses of the network speed.

The TCP optimized protocol in the event of loss reduces the speed not by 2 times, and only a few percent, and with a single loss of packets, the speed decreases quite slightly. It turns out that the solution to optimize network applications increases primarily the speed of information transfer. The maximum filling of the entire data transmission band is provided by the improved order of the TCP protocol.

Application level optimization mechanisms Offers acceleration of the work of the business applications themselves through WAN channels. It is the implementation of some protocols in popular products, unfortunately far from perfection. In particular, the CIFS (Common Internet File System) protocol, which is actively used in Microsoft networks, creates an overweight service message (confirmation of delivery, device availability, etc.). On the local network, these excess do not make a significant delay during the response, but in the distributed network become significant. Optimization devices are able to process most of the insignificant messages locally, without transmission via WAN, reducing traffic volume and reducing the response time of a number of network applications functions, such as network printing, access to file services, and the like. Actually, this day is just in this area and there is a competitive struggle from manufacturers. To the most frequently optimized protocols, CIFS, NFS, MAPI, VIDEO, HTTP, SSL and Windows Printing should be attributed. This "gentlemanic set" is present in the portfolio of almost any manufacturer, but optimize them in different ways.

Of all the above, it follows that traffic from the source to the recipient takes at least two optimization devices, and each of them is processed up to the application.

It is easy to guess that all optimizers work with TCP-based applications, which means the rest of the traffic pass through, without optimization. The same can be said about encrypted traffic (exception, perhaps, is SSL - many optimizers can "break" the session, to optimize traffic, and write back).

Interest in such a decision can show companies with a distributed structure that want to reduce costs on telecom operators. This can manifest itself both in the case of the use of light tariffs (the effect is obvious) and in the case of unlimited (transition to less high-speed tariff plans). Today, perhaps, this is the most interesting goal of using such devices. Other bonuses, not so obvious and transparent, can become: consolidation of servers, reducing the number of IT-personnel in remote offices, improving productivity by increasing the speed of applications.

In the struggle for interest in optimizers, manufacturers also offer the possibility of optimizing mobile employees, by installing specialized software for laptops and the possibility of installing virtual servers based on one optimizer in a remote office. Software for laptops on the code is similar to the software on the optimizers themselves, i.e. Laptop becomes like an optimizer.

In addition to companies with a distributed structure, this decision may be interesting and operators who can provide companies for optimization services (eg, rental). Such services are becoming popular in Europe.

The most frequently found solution for optimization is, of course, Cisco Waas. Good Marketing Vendor, a good solution and development strategy make their job. With the appearance of a series of available and reliable Wave, the position of Cisco still strengthened.

The WXC solution from Juniper is characterized by the fact that all traffic is packed in the UDP tunnel, i.e. Optimization occurs over all traffic. In this approach, of course, there are advantages. To them, I would take a fairly high "middle hospital" the value of optimization over all traffic (based on testing from one major customer).

Riverbed came to Russia not so long ago, but actively develops an affiliate network. It has good advantages over competition solutions (eg, competent caching mechanism, application optimization), but the high price for a solution is still preventing the growth of its popularity.

Summarizing all of the above, I would like to note that WAN-optimization is an interesting solution, rather transparent for business, but unfortunately that has not yet received great demand in Russian companies. Based on implementation, it was possible to achieve a reduction in traffic on average 2-3.5 times and significantly speed up application responses. For example, one of our customer, on satellite lines, about 20 hours of responses have been saved for a month of testing. And our company introduction of this decision made it possible to achieve two-time savings when paying network traffic, as well as increase the speed of corporate applications by an average of 1.7 times. At the same time, the return on investment in the project was only 3 months.

In any case, if an interest has come, then it is better to test the solution to about a month. Only on the basis of the results of such testing it will be possible to say how efficiently the implementation of optimizers in relation to a specific network. To study the solution, testing and installing it is best to attract experienced system integrators.

Why do you need server optimization

5 (100%) 2 vote [s]

The modern world of the business has long been conquered and expanses of the Internet. But the creation of a profit site is not all that is needed to conduct a successful business. If you have such a site already, it is worth thinking about optimizing the server operation.

Why do you need to optimize the operation of the servers?

The fact is that with the increase in the number of customers of your site, they definitely require their comfortable and fast service (after all, it is possible to successfully develop your business). Here in such situations, the following problems begin to emerge:

site pages are loaded slowly,
there may be no access to it completely.

Such problems will indicate that the server is in the overloaded state and cannot perform its direct functions.

Of course, in this case, the risk of losing even its regular customers. Even the most patient of them can go to the competing site, the charter wait for access to your.

Specialists recommend: As soon as possible, pay attention to server performance and make it optimization. Such a step will allow all customers to feel comfortable on your site, respectively, to reflect on the development of your business.

What is the server optimization?

As you can see, the optimal functioning of any website is directly connected with. If the client goes to the site page, the request is sent to the server where it is processing and the formation of an answer occurs. The speed of such a response procedure depends on the server, namely on the characteristics of its performance. With minimal speed, the server needs acceleration - increasing the response speed.

Many users to speed up the operation of the servers go to such a step as a replacement of equipment with more powerful characteristics. But this output does not always justify itself and does not allow to solve the problems that have arisen.

Our specialists offer to go different ways:

identify the problem itself (what prevents the server to function quickly?),
make a thin adjustment of Apache;
install and configure under a specific server configuration. NGINX caching web server;
configure MySQL database servers:

buffer sizes,
query caching,
work with tables

install and configure the caching module for PHP (XCache, Eaccelerator, etc.);
optimize the necessary operating system settings.

This approach will help speed up the speed of the server.

Effective SEO may prevent only one annoying error in the technical optimization of the site, but this will lead to the fact that the PS robots will not be able to correctly index the resource, to understand the structure of the site, and users will not find the information they need for them. All this, in turn, will lead to low site ranking.

The technical optimization of the site is a set of measures that are aimed at adjusting the technical aspects of the resource in order to improve its interaction with the robots of search engines. Technical optimization allows you to ensure fast and maximally complete indexing of the pages of the site.

5 main parameters of technical optimization

1. Robots.txt file

It is important to note that the Robots.txt file must be contained in the root directory of each resource. This is the first file to which the PS robots appear when they enter the site, and in which the instructions are stored for them.

This file shows the site indexing parameters: which pages should be entered into the search base, and which you need to exclude. In addition, it can indicate directives for all search engine robots immediately and for robots of each PS separately. The compilation of this file and its configuration can be found in more detail on the website of the help of Yandex webmasters.

You can check the file in the Yandex.Vebmaster service, menu item "Robots.txt" (https://webmaster.yandex.ru/robots.xml).

2. Sitemap - Site Map

Sitemap is one of the resource pages, information on which is similar to the content of a regular book. This page is used as a navigation element. The site map contains a complete list of sections and / or all pages placed on the resource.

The HTML site map needs users to quickly and convenient information search, and XML search engines to improve the site indexation.

Using the site map, search robots see the entire structure and faster the new pages index.

Site map check (https://webmaster.yandex.ru/sitemaptest.xml)

An example of the correct site map in format.html:

3. Redirectures (redirects)

Redirect apply to redirect resource visitors from one page to another. Examples for which you need redirects, quite a lot:

Change of the domain name site.
Plywalk mirrors. Many sites are not configured 301 redirect with a domain that contains WWW in the address, on a domain without www, or vice versa.

Slip the redirects are needed in the file.htaccess. Since the search engines site.ru and www.site.ru can consider different sites, then duplicate can fall into the issuance. This will create difficulties with ranking in extradition, etc.

The main status-codes of redirects:

300 - Multiple Choices (several options to choose from);
301 - Moved Permanently (moved forever);
302 - TEMPORARY REDIRECT (temporary redirect);
303 - SEE Other (requested resource can be found either by Dr. address);
304 - Not modified (the contents did not change - it can be drawings, styles tables, etc.);
305 - USE proxy (access should be carried out through proxy);
306 - Unused (not used).

Useful service to define page responses: http://www.bertal.ru/

4. Setting up the species of the URL page

It is important to check the site on uniformity addresses of all its pages. For example, on the whole site, the page should have a closing slash: http://site.ru/katalog/ and http://site.ru/products/. If part of the pages has the appearance of http://site.ru/katalog, and the part is http://site.ru/products/ it is incorrect.

Check the addresses of the internal pages of the resource on errors will be convenient after creating a site map.

5. Site errors

During the download of any page of the site, a server request is sent, which meets the HTTP status code and loads (or does not load) the page.

Main status codes:

200 - with the page everything is in order;
404 - non-existent page;
503 - The server is temporarily unavailable.

"404 Error" is one of the most important technical parameters of optimization, which must be revisted.

If the page exists, and the server when it informs about 404 errors, the page will not be indexed by the search engines. Otherwise, a large number of pages with the same text may fall into the index, which is extremely negatively affecting ranking.

You can check the status codes using http://www.bertal.ru/ or Yandex.Webmaster.

We reviewed only the basic parameters of the technical refinement of the site, which should be paid attention to first. If you find such errors on your website or have difficulty with eliminating, contact us only in a professional SEO company.

Optimization of database infrastructure and virtual environments

Increase the performance of the database infrastructure in the current state and receive recommendations for further optimization using cloud services.

SERVER OPTIMIZATION project is relevant in cases:

lack of a centralized data storage and data recovery system;

problems with the performance of SQL servers;

problems in the application of applications;

lack of a system for ensuring the fault tolerance of the data center;

estimates of the readiness and feasibility of migration of IT infrastructure in the clouds;

the lack of a common understanding of the status of the database infrastructure and the virtual environment.

Manage the server medium more efficiently:

Technical audit of SQL database infrastructure

Detection of server configuration problems "Thin" SQL Server Setup is a difficult task even for database administrator with sufficient experience. We will conduct an exhaustive analysis of system level settings, such as default memory settings, partitioning, parallel sessions, caching, discs, backup settings, etc.

Memory Optimization and Disc Storage The main factor affecting the performance of any modern database is the I / O subsystem. We will analyze the nature of the load on the database and provide recommendations for optimizing the repository and RAM from the point of view of both the speed and reliability of information storage.

Optimization of database performance Each developer databases have their own recommendations for optimizing server performance or cluster. Our company's specialists performed various options for setting up a database for different types of load and can offer optimal performance settings. These recommendations are always supported by references to the documentation and the advanced experience of vendors on the deployment of software.

Analysis of error logs and detection of critical problems Error logins are the main source of information on the operation of the base and problems in applications using this base. Our specialists have their own tools for analyzing the problems and search for methods to eliminate them. As a rule, any project necessarily comprises an analysis of database servers logs based on what is the recommendations for optimization.

Optimization of databases (Triggers, indexes, trace messages) All modern databases collect information about their own performance as a set of data sections that allow you to determine how efficiently the base with disk subsystem, query cache, indexes in tables, etc. We will analyze this information and provide recommendations for making changes to the settings.

Creation of fault tolerant architecture Development of a 24x7 work architecture with a 24x7 mode with an idle time no more than 2 hours a year involves an increase in the number of servers, the detailed elaboration of the program part and the exclusion of a single point of failure. We will help solve such a task, and in addition, you will receive a backup policy and recovery policy as an executable database code and all data.

Preparation of a highly accessible database with minimal response time Our specialists will help optimize database operation to obtain the maximum speed of your server. Delays analysis, cache work efficiency, indexes, "heavy requests", query optimizer work, and also provide recommendations for improving performance.

Optimization of databases to work with specific applications We are optimizing and configuring MS SQL and Oracle database for business applications, such as document management systems, management accounting systems, portal solutions, etc. When performing work, we are guided by the recommendations of software providers on software setup, as well as your own optimization experience DB under various types of user load.

Selection of a hardware platform for database deployment Suppliers of modern databases have lists of equipment optimal for database operation. We will be able to analyze your supplier preferences, find servers on which you can expand on databases, or prepare the specification for the purchase of equipment under the database.

Analysis and optimization of the database virtual environment The performance problems of any software in a virtualized environment are usually associated with the peculiarities of each specific hypervisor and equipment on which virtual servers work. Our specialists will help identify the reasons for slow motion and optimize the database location on virtual servers in your data center.

Get an accurate calculation of our project from ours or find out how to conduct a survey without costs from your part with the support of the vendor.