JavaScript
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Why this exists "Which service is producing the errors, how slow are we really, and when did it start?" are the questions behind every dashboard and every incident review. With a log file and a hundred lines of…
A Log Summary Tool in Node.js: readline, groupBy, Rankings, Percentiles and Per-Minute Counts
Turn a raw log into answers with modern JavaScript: stream the file line by line, parse without exceptions, group with Object.groupBy and Map.groupBy, rank errors per service with a stable sort, compute response-time percentiles, and bucket problems per minute.
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