зеркало из https://github.com/microsoft/statsd.git
51 строка
1.0 KiB
Markdown
51 строка
1.0 KiB
Markdown
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StatsD
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======
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Sometimes you need to count stuff.
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Maybe you need to know how long something took.
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Concepts
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--------
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* *buckets*
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Each stat is in it's own "bucket". They are not predefined anywhere. Buckets can be named anything that will translate to Graphite (periods make folders, etc)
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* *values*
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Each stat will have a value. How it is interpreted depends on modifiers
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* *flush*
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After the flush interval timeout (default 10 seconds), stats are munged and sent over to Graphite.
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Counting
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--------
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gorets:1|c
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This is a simple counter. Add 1 to the "gorets" bucket. It stays in memory until the flush interval.
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Timing
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------
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glork:320|ms
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The glork took 320ms to complete this time. StatsD figures out 90th percentile, average (mean), lower and upper bounds for the flush interval.
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Sampling
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--------
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gorets:1|c|@0.1
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Tells StatsD that this counter is being sent sampled ever 1/10th of the time.
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Guts
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----
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* UDP
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Client libraries use UDP to send information to the StatsD daemon.
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* NodeJS
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* Graphite
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