https://the-sumeet.github.io/tags/unique-id-generator/Recent content in Unique-Id-Generator on Sumeet's BlogHugoen-usSat, 21 Feb 2026 00:00:00 +0000https://the-sumeet.github.io/posts/unique-id-generator/Sat, 21 Feb 2026 00:00:00 +0000https://the-sumeet.github.io/posts/unique-id-generator/In a single database where you can just use an auto_increment column, distributed systems have multiple nodes working simultaneously. If they don’t coordinate perfectly, they might accidentally hand out the same ID to two different users. To solve this, we need a strategy that ensures IDs are Unique and sortable. The system should be able to generate 10,000 IDs per second. Max 64 bits. Common Approaches UUID UUIDs are 128-bit number generated locally by each node using a combination of time, node ID, and randomness.