Why you need a performance dashboard like StackExchange

Most startups talk about performance crucial. But often with all the other pressing business demands, it can be forgotten until it becomes a real problem. Flipping through High Scalability today, I found a post about Stack Exchange’s performance dashboard. Join 28,000 others and follow Sean Hull on twitter @hullsean. The dashboard for Stack Exchange performance …

How to Optimize MySQL UNION For High Speed

Join 38000 others and follow Sean Hull on twitter @hullsean. There are two ways to speedup UNIONs in a MySQL database. First use UNION ALL if at all possible, and second try to push down your conditions. By the way, I write an article like this every month, covering consulting lessons, tech trends, cloud and …

Five More Things Deadly to Scalability

Join 19k others and follow Sean Hull on twitter @hullsean. 1. Slow Disk I/O – RAID 5 – Multi-tenant EBS Disk is the grounding of all your servers, and the base of their performance. True with larger and larger main memory, much is available in cache, a server still needs to constantly read from disk …