Highload • January 21, 2025 • 4 min read
JVM Garbage Collection Tuning — G1 vs ZGC vs Parallel
Which garbage collector to pick for a Java backend in 2025, the handful of flags that actually matter, and the signs your choice is wrong.
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Highload
Highload • October 24, 2024 • 4 min read
HikariCP Tuning — The Settings That Actually Matter
Why default HikariCP is almost right, the four settings worth tuning deliberately, and the symptoms that tell you something is off.
Highload • August 2, 2024 • 5 min read
Redis Caching Patterns That Hold Up in Production
Cache-aside, write-through, read-through, and the stampede protection that separates a cache from a foot-gun. With concrete Java examples.
Highload • April 16, 2024 • 5 min read
Postgres Replication and Failover — A Practical Guide
How Postgres streaming replication actually works, setting up replicas that don't lag, and the failover mechanics you must rehearse before production.
Highload • January 11, 2024 • 4 min read
Postgres at Scale — How Far You Can Push a Single Node
The optimizations that let one Postgres instance handle tens of thousands of transactions per second, and the signs that it's time to think beyond a single node.
Highload • July 18, 2023 • 4 min read
Kafka Schema Registry — The Missing Guardrail
Why you need a schema registry the moment you have more than one consumer, how Avro and Protobuf compare, and the compatibility rules that prevent production accidents.