10/20/2023 0 Comments Postgresql non sequential primary key![]() They also are monstrously wide at 16 bytes of storage). That being said should I try to avoid any solution that involves a serial column and instead find an alternate way to do paging?Īlthough undeniably handy, purely randomly generated primary keys are not necessarily good practice as they completely degenerate the binary tree in the single most important index in the table (such as the widespread habit of using UUIDs when not necessary. *Edit: Additionally, I've heard things about serial IDs not scaling to networked solutions well. This could work but the IDs are longer than my preference and I'm not experienced to know what the pros/cons of this system would be.Įager to hear about any advice/thoughts/systems you've had experience with. So if we were to make the primary ID a randomly generated string like youtube does, then what's the best way to preserve page sorting? Is it bad practice to have a randomly generated technical ID along with a serial column? Maybe it's better to have a created timestamp column?Īn interesting alternative based on what instagram did is described here (basically also what twitter did): /9/a-better-id-generator-for-postgresql I like the way the youtube ids are formatted, but I probably don't need as many characters. Preferably all IDs are the same length and are relatively short for user experience (6-8 characters). createdTimestamp column or is there a better way? A way to safely page through entries if primary key is randomly generated like youtube does. I'd like to have a system that fulfills the following: I'm currently using a single technical serial "id" column in my DB. non sequential, so not telling you that you're viewing the 324234th video uploaded to youtube). This is also helpful for API security, as the unique identifier is in no way tied to the information being stored.This seems to be a very common system used for sites all around the web. ![]() This allows us to generate a UUID client-side, with a server-side default, if required.Ī UUID-based approach brings unique benefits with the random nature of the data type being helpful with certain data migrations. Id UUID NOT NULL DEFAULT gen_random_uuid(), ![]() SequelizeĬonst = require('sequelize') ĭefaultValue: literal('gen_random_uuid()')Īwait sequelize.query('CREATE EXTENSION IF NOT EXISTS "pgcrypto"') I’m no different! Here’s how you can create an auto-incrementing ID field in your Sequelize model definitions. Most developers choose the most straightforward option before exploring potential optimizations. Below I’ll explain how each can be achieved in Node.js using the Sequelize ORM.
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