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MySQL Optimization: Part 2

Mysql logo1. Query cache – On most servers, there are certain MySQL queries that you and/or your scripts will run more often than others. In fact, you may run the same query hundreds or even thousands of times in a single day. The query_cache setting will save the most used queries in memory for quick access

query_cache_limit=1M
query_cache_size=32M (32MB for every 1GB of RAM)
query_cache_type=1

2. Key buffer size – This refers to the size of buffers used for indexes. A larger buffer will result in faster SQL response time when a command is issued. The key_buffer_size should be at least 1/4 but no more than 1/2 of the RAM size of the server.

key_buffer=256M (128MB for every 1GB of RAM)

3. Table cache – Just like MySQL can cache queries, it can also cache tables. If you think about how often a database table would be accessed, especially when using content management systems and web applications, this only makes sense. You can adjust this according to your memory.

table_cache=1500

Next week, we will cover more MySQL optimization tips.

Source: linuxstuffs

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