slow query log

Log is very important to a system or application, troubleshooting or resolving faults, the first time is to look at the error logMySQL Log classification: Log files record the various types of activities affecting the database, MySQL database common

The last few days to update the program, testing the function, found that the application login is very slow, thought to be a problem with the application, but wait for a long time after the discovery of the application login is OK. Check the

Mysql database performance optimization 1. mysql Performance Optimization Today, database operations are increasingly becoming the performance bottleneck of the entire application, especially for Web applications. Concerning the database performance,

How does mysql enable slow query to enable the mysql slow query log record bitsCN. the slow query log of commysql is very useful for queries with tracing problems. it can be used to analyze the resource-consuming SQL statements in the current

This article mainly introduces the MySQL log settings and viewing methods, the need for friends can refer to the following MySQL logs: error log:-log-err query log:-log slow query log:-log-slow-queries update log:- Log-update binary log:-log-bin by

Mysql logs are stored in all kinds of logs in any database, recording all aspects of the database's work, to help the database administrator track various events that have occurred in the database. In mysql, there are four different types of logs,

This article describes how to query logs and slow query logs in MySQL. It also describes how to use the Mysqldumpslow log analysis tool that comes with MySQL. For more information, see I. query logs Query all the queries in MySQL by using "-- log [=

The database design may only be based on the current business needs. It may not need high availability, high scaling, and other features at that time, but as the business and user volume increase, the infrastructure is gradually improved. This blog

One to avoid Web Access errors1 database Connection timeout produces page 5xx error2 slow query causes page not to load3 blocking causes data not to be committedSecond, increase the stability of the databaseThree optimized user experience1 Smooth

The essence of indexing is to filter out the final desired results by shrinking the range of data that you want to get, and to turn random events into sequential events, that is, with this indexing mechanism, we can always use the same lookup method

MySQL logs mainly include: error log, query log, slow query log, transaction log, binary log;Logs are an important part of the MySQL database. The log file records the changes that occurred during the MySQL database operation, which is used to

1. Query log, slow query log, binary log comparison Query log general_log All actions of the user are recorded, including additions, deletions, etc. You can specify the output as a table Slow query log

Recommended this SQL optimization book, "Effective MySQL SQL statement optimization."The main explanation: How to analyze the performance of SQL, index principle, how to create appropriate index, how to analyze the performance bottleneck of the line

Change to: http://lizhenliang.blog.51cto.com/7876557/16574651. database table Design to avoid slow query, inefficient query statements, not properly indexed, database congestion (deadlock), etc.2. Database deploymentProject initial visits are not

Preface After the installation of MySQL, there must be some tuning of MySQL's various parameter options. Although the MySQL system is highly scalable, it can run efficiently in a very sufficient hardware resource environment, and can operate well in

1, configuration onLinux:Added in MySQL config file my.cnfLog-slow-queries=/var/lib/mysql/slowquery.log (Specify the log file location, can be empty, the system will give a default file Host_name-slow.log)long_query_time=2 (record over time, default

If you are a web developer, if you want to debug your app or improve its performance, then you need to refer to various log files. Logging is the best choice to start troubleshooting. As far as the famous MYSQL database server is concerned, you need

A mature database architecture is not designed to have a high availability, high scalability, and so on, it is with the increase in user volume, the infrastructure is gradually improved. This blog post mainly discusses the MySQL database development

MySQL Slow query settingsThe method of analyzing the performance of MySQL statement query in addition to using the EXPLAIN output execution plan, you can also let the MySQL record query over a specified time of the statement, we will exceed the

Database is a very important part of information system, it is very important to manage it reasonably and efficiently. Typically, the total administrator creates different administrative accounts, and then assigns different operational permissions