Best of MongoDB — January 2026

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   Video

   Kiki's Bytes·19w

   How I Corrupted 2 Million+ DB Records in Prod

   A migration script to encrypt sensitive user data in MongoDB corrupted over 2 million records by accidentally wiping out unencrypted fields. The bug occurred because MongoDB's $set operation replaces entire nested objects rather than merging properties. Running the migration twice resulted in both encrypted and unencrypted fields being set to undefined, causing queries to return millions of records and spike memory usage in Kubernetes pods. Recovery required restoring a database backup from before the migration and cross-referencing with Redshift data to identify users who registered during the incident window.

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2. 2
   Article

   Abhishek Shrivastav·19w

   Web Developer Roadmap 2026: A Complete MERN Stack Guide with Real Projects

   A structured learning path for aspiring full stack developers covers the MERN stack (MongoDB, Express, React, Node.js) from fundamentals to deployment. The roadmap emphasizes building real projects early, understanding web fundamentals before frameworks, mastering JavaScript core concepts, and creating a portfolio with deployed applications. It includes state management with Redux Toolkit, authentication, database design, performance optimization with Redis, and deployment strategies, while stressing that consistent practice with actual projects matters more than consuming endless tutorials.

   59

   2
3. 3
   Article

   selfh.st·20w

   Self-Host Weekly #152: Wrapped

   A weekly newsletter covering self-hosting news, including 35+ new project launches, a critical MongoDB security vulnerability (CVE-2025-14847), and a spotlight on Tugtainer, a platform for monitoring and managing Docker image updates. The newsletter also features community resolutions for 2026, a Home Assistant integration for Harry Potter magic wands, and various tutorials on UniFi firewalls, TrueNAS, and Unraid servers.

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