# What’s everybody working on? (August Edition) > Source: > Published: 2026-08-21 05:35:04+00:00 Hey everyone! For the August edition, I wanted to share the progress on my Zig personal project: **ZVector**, a vector database engine built from scratch to be lightweight and fast. Over the last few weeks, I focused heavily on the compute and memory performance layer: `@Vector` :`@Vector` primitives. The performance gains for batch vector operations in memory have been huge.`align(64)` ) to line up cleanly with L1/L2 cache lines and eliminate allocation overhead.This is where things got tricky. Lately, I’ve hit a wall with **serializing and storing the vector database state to disk in binary format**. My goal is to keep memory usage low by persisting the vector index directly to disk, but I’m running into two main challenges: `std.fs.File` ) and high-performance random reads (like `mmap` ) for fast nearest-neighbor search without blowing up the RAM.If anyone here has worked on custom binary file formats or memory-mapped files (`mmap` ) in Zig, I’d love to pick your brain after the talks! Thanks for listening, and I can’t wait to hear what the rest of you have been building this month!