Tagged: Concurrency

blog/disruptor-ringbuffer.md

August 26, 20262 min read

Java LMAX Disruptor. Part 1: Preallocated RingBuffer

A regular queue allocates a new object for every message and puts pressure on the GC. We look at how the LMAX Disruptor preallocates the entire RingBuffer and reuses event objects, taking allocations out of the producer's hot path.

Java Kotlin Concurrency Performance

blog/pointer-chasing.md

August 26, 202610 min read

Pointer Chasing: Why a Linked List Loses to an Array Even Though Both Are O(n)

Swap a linked list for an array without touching the algorithm — and you get a speedup of several times. A JMH benchmark digs into why: cache misses, the dependency chain between reads, and just how much slower pointer chasing really is.

Java Kotlin Performance JMH Concurrency