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A nice article in this month's list defines the six pillars of observability: Traces, change Events, Metrics, Profiles, Logs, and Exceptions (TEMPLE). The common phrase is three pillars, but the author, Yuri Shkuro, compellingly defines six pillars.

These six pillars have different data types, all with different structures and strengths for identifying whether issues are occurring and why. Metrics and Exceptions for identifying when there is an issue; all six pillars give different slices of information that help you investigate the issue and identify next steps and fixes.

Now on to all the usual newsletter list of links, tips, tools, news and articles including that six pillars article, and as usual I've extracted all the tips into this month's tips page

A note from this newsletter's sponsor

News

Java performance tuning related news

• Oracle provides a Java 8 performance pack which backports many of the Java 17 performance improvements to Java 8
• The Story of a Java 17 Native Memory Leak
• The cost of object creation can be far higher than cleaning them up if they are very short-lived

Tools

Java performance tuning related tools

• "How to Read Java: Understanding, Debugging, and Optimizing Jvm Applications" By Laurentiu Spilca, Publisher: Manning
• AppCDS can be autogenerated from Java 19 `java -XX:+AutoCreateSharedArchive -XX:SharedArchiveFile=my-archive.jsa ...`
• Panama's MemorySegment API provides a drop-in compatible ByteBuffer replacement with better performance, no 2GB size limit, and proper API's for working with structured binary data

Articles

• Profiler 101: Exposing Hidden Killers (Nitsan Wakart/JavaZone)
• Secrets of Performance Tuning Java on Kubernetes (Bruno Borges/JavaZone)
• TEMPLE: Six Pillars of Observability (Yuri Shkuro/Medium)

Jack Shirazi

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