News — 2026-05-19

• Nine Entertainment’s journey: Achieving 98% cost savings with Amazon ElastiCache Serverless for Valkey
  AWS Database Blog · by Sean Byrne
• Automated JDBC query caching with the AWS Advanced JDBC Wrapper
  AWS Database Blog · by Qu Chen
• Show HN: How to analyze your LLM output – A behavioural health monitor for LLMs
  HackerNews · 8 points · 4 comments · by k-thimmaraju · HN discussion
• Show HN: Tracecast – open-source generative data apps built on top of Marimo
  HackerNews · 6 points · by malachyd · HN discussion
• Show HN: Connparse, a tool to parse DSNs, URLs, file paths, and cloud storage
  HackerNews · 3 points · by modelorona · HN discussion
• Building audit logging in Postgres without triggers
  HackerNews · 3 points · by 18nleung · HN discussion
• 20k+ ACID transactions/SEC on a single laptop: consistency vs. speed myth
  HackerNews · 2 points · by le_yougue · HN discussion
• Show HN: ClassKeep – Booking, credits, and smart waitlists for boutique studios
  HackerNews · 1 points · by dtfortu · HN discussion