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Oplog

4 articles · Page 1 of 1
Tencent Cloud Developer
Tencent Cloud Developer
Jun 30, 2026 · Databases

How Kernel Optimizations Cut MongoDB Physical Backup Disk Bloat by 90%

MongoDB’s physical backup can cause hidden nodes to balloon in disk usage, but by analyzing WiredTiger’s space‑reclamation process and introducing a checkpoint‑release API, the team reduced backup‑induced disk expansion from up to 200% down to under 10%, saving hundreds of gigabytes and cutting backup time by over 40%.

Checkpoint ReleaseDisk BloatKernel Optimization
0 likes · 19 min read
How Kernel Optimizations Cut MongoDB Physical Backup Disk Bloat by 90%
Aikesheng Open Source Community
Aikesheng Open Source Community
Oct 10, 2023 · Databases

Diagnosing and Resolving MongoDB and Redis Replication Failures: Oplog Issues and Recovery Strategies

This article analyzes a MongoDB replication failure caused by missing oplog entries, compares logical initialization repair methods with Redis replication, and provides practical steps—including oplog size adjustment and snapshot techniques—to restore synchronization and prevent similar issues in production environments.

Database RecoveryLogical InitializationMongoDB
0 likes · 9 min read
Diagnosing and Resolving MongoDB and Redis Replication Failures: Oplog Issues and Recovery Strategies