Blog

PostgreSQL Locks & Spring JPA Locks

I recently spent some focused time reading PostgreSQL’s concurrency and locking documentation, and then mapping that understanding to how locks actually work in Spring JPA / Hibernate.

This is not a reference manual.
It’s a mental model — the kind that helps avoid race conditions, deadlocks, and subtle production bugs. (with the help with AI)

LocalTunnel: Quick HTTPS Tunnel to Localhost

Needed to share my local dev server externally. LocalTunnel made it instant.

Bluetooth on macOS: AAC vs SBC Codec Stability

Had Bluetooth audio dropouts with my Sony speaker. Switching from AAC to SBC fixed it.