Should I edit MySQL configurations for high-traffic websites?

Mihai B.

Well-known member
Apr 19, 2016
I have a large website that receives a significant amount of traffic, and my friends have suggested that editing the MySQL configuration file can improve its performance. Can anyone share their experiences and insights into why and how editing the MySQL config file can benefit a high-traffic website? What specific configurations should I consider adjusting, and what impact can these changes have on MySQL's performance?
I appreciate any advice or best practices. Thanks in advance!

David Beroff

Well-known member
Jun 14, 2016
Configuring MySQL for a large website requires a tailored approach based on your specific server's resources, traffic patterns, and database requirements. However, I can provide you with a general template for a my.ini configuration file that you can start with. Please note that you should thoroughly test any configuration changes on a non-production server and monitor the server's performance closely after applying them. Here's a basic template to get you started:

# Basic Settings
innodb_buffer_pool_size = 2G      # Adjust based on available RAM, usually 50-70% of total RAM
key_buffer_size = 256M             # For MyISAM tables
max_connections = 500              # Adjust based on the number of concurrent connections you expect
thread_cache_size = 50

# Query Cache (Consider using an external caching mechanism like Redis or Memcached for high-traffic sites)
query_cache_type = 0
query_cache_size = 0

# Logging
slow_query_log = 1
slow_query_log_file = /var/log/mysql/slow-query.log
log_error = /var/log/mysql/error.log

# InnoDB Settings
innodb_file_per_table = 1
innodb_flush_log_at_trx_commit = 2
innodb_log_file_size = 256M        # Adjust based on database write patterns
innodb_flush_method = O_DIRECT      # Helps with SSD performance

# Other Settings
table_open_cache = 1000             # Adjust based on the number of tables in your database
max_allowed_packet = 16M            # Maximum packet size for network communication

Note that this configuration is a starting point. You should adjust the values based on your server's RAM, CPU cores, and the nature of your database queries. Regular monitoring, performance testing, and potentially consulting a database administrator can help you fine-tune these settings further for optimal performance.

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