Aoe_CacheStats

This Magento module gathers cache statistics and writes them into a log file (buffered).

Author: Fabrizio Branca

Notes

• Although the performance impact is probably negligible (the data will only be written to the file once) you should be careful to when running this in production over a long period of time.
• The log file (var/log/aoe_cachestats.log) will grow quickly. Make sure you keep an eye on it and/or configure logrotate to handle it.
• Since the data is buffered and written at the end of the request the order of log entries will only be chronological within the same request, but not across all requests.

Example

2015-11-11T04:48:06+0000,8421,m,config_global.lock,0
2015-11-11T04:48:06+0000,8421,h,config_global,4
2015-11-11T04:48:07+0000,8421,m,app_4e4abdd8dc00c3dacb3c1597944a3b6c,0
2015-11-11T04:48:07+0000,8421,s,app_4e4abdd8dc00c3dacb3c1597944a3b6c,2
2015-11-11T04:48:07+0000,8421,m,store_admin_config_cache,0
2015-11-11T04:48:07+0000,8421,h,config_global_stores_admin,1
2015-11-11T04:48:07+0000,8421,s,store_admin_config_cache,2
2015-11-11T04:48:07+0000,8421,m,app_b1fb6e8f13287c01e5c05063633dda4c,0
2015-11-11T04:48:07+0000,8421,s,app_b1fb6e8f13287c01e5c05063633dda4c,1
2015-11-11T04:48:07+0000,8421,m,app_e4d52b98688947405ede639e947ee03d,0
2015-11-11T04:48:07+0000,8421,s,app_e4d52b98688947405ede639e947ee03d,2
2015-11-11T04:48:07+0000,8421,m,store_ca_en_config_cache,0
2015-11-11T04:48:07+0000,8421,h,config_global_stores_ca_en,1

Format

• Timestamp in DATE_ISO8601 format
• Process ID
• Type
  • h: hit
  • m: miss
  • s: save
  • r: remove
  • f: flush
  • c: clean
• id (or semicolon separated tags when cleaning)
• duration in milliseconds