I'm confused now. What's the difference between logging and tracing? After reading more about tracing, the lines seem super blurry.
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Replying to @yoshuawuyts
logging <-> metrics <-> tracing all seem like a spectrum. I've heard
@mipsytipsy say smart things about this but i can't recall where?1 reply 0 retweets 2 likes -
hi! :) logs are strings, and they have to be parsed, which is stupid and expensive. Structured logs, or events, are the future. As for
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..tracing, it generally means there is a unique request id (usually a header) which is attached to every log or event for that req
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Metrics, otoh, are typically a "dot" of info, not an event. Metrics usually report a detail over an interval of time and then squish it.
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Like, if the interval is per second, it may sample or average all the values seen over that second. The orig event is lost with its context
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Newer metrics stores try to compensate for this weakness by adding a limited # of "tags" to each metric. Works, but write amplification sux
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They are basically trying to wrangle metrics back into something that feels like an event based system. Because those are better.
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Distributed tracing and honeycomb are the only next gen observability approaches I know of. Tracing==depth first, honeycomb breadth first.
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(Does that answer your questions, or am I being that boring math teacher right now?
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Replying to @mipsytipsy @jergason
It totally does! Thanks heaps for answering :D
11:48 AM - 25 Apr 2017
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