---
title: "Redesign Authorization to monday.com Scale"
url: https://daily.dev/posts/redesign-authorization-to-monday-com-scale-vahbvgdsl
source_url: https://engineering.monday.com/redesign-authorization-to-monday-com-scale
type: article
source: "monday Engineering"
published: 2026-04-26T14:16:07.176Z
updated: 2026-04-26T14:16:30.070Z
tags: ["career", "authorization", "aws-dynamodb", "change-data-capture"]
reading_time: 6
upvotes: 4
comments: 0
language: en
---

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# Redesign Authorization to monday.com Scale

**[monday Engineering](https://daily.dev/sources/monday)** · 6 min read · 4 upvotes · 0 comments

## Summary

monday.com redesigned its authorization system to handle scale by replacing real-time data enrichment with an in-memory, replication-based approach. The old system queried MySQL and multiple microservices on every request, adding ~200ms of latency and creating reliability risks. The new architecture uses WAL-based CDC pipelines to replicate data into DynamoDB and S3 snapshots, then loads tenant data into pod memory with a stickiness layer for consistent routing. The migration was done incrementally with continuous integrity checks. Results: P50 latency dropped from 240ms to 6ms, P99 from 720ms to 80ms, with full independence from tier 2–3 services and automated horizontal scaling.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://engineering.monday.com/redesign-authorization-to-monday-com-scale>

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---

Tags: [#career](https://daily.dev/tags/career), [#authorization](https://daily.dev/tags/authorization), [#aws-dynamodb](https://daily.dev/tags/aws-dynamodb), [#change-data-capture](https://daily.dev/tags/change-data-capture)

[View this post on daily.dev](https://daily.dev/posts/redesign-authorization-to-monday-com-scale-vahbvgdsl)