Alcazar · Technical Blog

Technical notes, architecture writeups, and release stories.

RSS feed

Portable Secret: Now Open Source and Fully Local

Feb 26, 2026

We open sourced our tool for creating self-decrypting HTML files. The generator itself is now portable too.

Read note

Portable Secret: End-to-End Encrypted Files in One HTML

Feb 23, 2026

How we built a one-file, offline, browser-native way to share encrypted text and attachments.

Read note

A Daily Hacker News Digest That Actually Runs

Feb 4, 2026

How we built a resilient, idempotent, and transactional daily digest system by treating content as a database transaction.

Read note

Fast Realtime Updates Without WebSockets

Jan 25, 2026

How long polling, smart snapshots, and careful invalidation deliver snappy UI updates.

Read note

Designing the Perfect ID: Marrying UUIDv7, Stripe Prefixes, and ULID

Jan 14, 2025

How we designed our database ids by standing on the shoulders of giants.

Read note