Java
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Why this exists The earlier Lambdas and Streams page teaches the syntax with small lists. This page uses streams for what a DevOps engineer actually does with them: turn a raw log into answers. Which service produces…
A Log Summary Tool with Streams: Parse, Group, Rank, Percentiles and Per-Minute Counts
Use Java streams and collectors on real data: parse lines into records with Optional, count by level, rank errors per service, build a nested service-by-level table, compute response-time statistics with a percentile, and chart problems per minute.
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