Harvard Extension School
CSCI E-12 Fundamentals of Web Site Development | Spring 2019

## Monitoring Your Site

Steve Souders
High Performance Web Sites, Even Faster Sites, Web Performance Daybook Volume 2

- Content Performance
  - Synthetic vs RUM
  - Synthetic: WebPageTest (O'Reilly, "Using WebPageTest"), PageSpeed, YSlow
  - RUM: SpeedCurve, catchpoint, pingdom
- Application Performance
  - New Relic, AppDynamics, Foglight, etc.
- Servers/Infrastructure
  - Nagios, Zabbix, Sensu, statsd/graphite
- Capture (Log), Measure, Display
  median, 95th, 98th percentile.

Copyright © David Heitmeyer