The 5 Biggest Ways to Boost MySQL Scalability

The 5 Biggest Ways to Boost MySQL Scalability:

Sean Hall with some really good MySQL advice: 

1. Tune those queries. Biggest bang for your buck. Enable the slow query log and watch it. Once you've found a heavy resource intensive query, optimize it! Tune what receives real-world traffic. 


2. Employ Master-Master Replication. Immediately have a read-only slave for your application to hit as well.


3. Use Your Memory. Set innodb_buffer_pool_size, key_buffer_size and other key options.


4. RAID Your Disk I/O. Use RAID 10 mirroring and striping. On EC2 striping across a number of EBS volumes using the Linux md software raid.


5. Tune Key Parameters. speeds up inserts & updates with innodb_flush_log_at_trx_commit=2; create a tablespace and underlying datafile for each table with innodb_file_per_table.

Full details at the original article.