Many clients have asked me “how do I record custom metrics from Lambda?”. Generally speaking, you can either: Publish custom metrics synchronously – e.g. send them at the end of an invocation. Publish custom metrics asynchronously by writing them to stdout first and then extracting them from CloudWatch Logs. Problems with sending custom metrics synchronously …
Introducing a better way to record custom metrics Read More »
Years ago, I used average latency on every dashboard and every alarm. That is, until I woke up to the problems of average latencies along with everybody else in the industry: When the dataset is small it can be easily skewed by a small number of outliers. When the dataset is large it can hide …
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