Caf.js
Co-design permanent, active, stateful, reliable cloud proxies with your web app.
Profiler Library
Library to profile the performance of your app.
It measures latency, throughput, and queue length for CA requests.
For an app called root-helloworld
access performance data with:
curl https://root-helloworld.cafjs.com/stats
and an example reply is:
{"node_10_5_123_118:1000":
{"requests":{"type":"counter","count":32},
"pending":{"type":"counter","count":0},
"stats":{"type":"timer",
"duration":{"type":"histogram","min":10.468857362866402,
"max":25.201154872775078,"sum":520.6768773496151,
"variance":10.983277433789388,
"mean":16.271152417175472,
"std_dev":3.3141028097796523,
"count":32,"median":15.921283978968859,
"p75":18.803593004122376,"p95":21.699812030419697,
"p99":25.201154872775078,"p999":25.201154872775078},
"rate":{"type":"meter","count":32,"m1":2.9644e-320,
"m5":4.612237719003562e-216,
"m15":1.2479503887084598e-73,
"mean":0.00021508800984629893,"unit":"seconds"}
}
}
}
where:
- requests Number of of messages received.
- pending Number of requests queued.
- duration Latency time (in microseconds) to process your requests. See the
metrics
package for details. - rate Number of requests processed per second. Averages over a moving window (1min, 5min, 15 min) using exponential decay. See the
metrics
package for details.
Configuration Example
framework.json
See {@link module:caf_profiler/plug_profiler}
ca.json
None