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beyond5nines

Field notes for engineers who run production systems — every post starts with a real incident and works through to the fix.

14 articles

12 topics

3 series

// investigations

Series

series AWS GLUE SERVERLESS SPARK

4 parts · updated 2026-04-12

Serverless moved the servers out of sight, not out of our problem — a series on the failures AWS Glue's abstraction hid from us.

start with the incident → all parts →

series NEO4J APOC OBSERVABILITY

3 parts · updated 2026-04-24

A series on what APOC procedures really cost in production: hidden page cache evictions, GC pauses, and replication lag.

start with the incident → all parts →

series AWS ROUTE53 CLOUDTRAIL DNS ARCHITECTURE ATHENA

4 parts · updated 2026-06-20

A deleted Route 53 record took the app down for 75 minutes — this series on why cross-account audit needs one home, not N.

start with the incident → all parts →

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