~/talk

Database sharding at the load balancer level

TalkinRussianat Saint HighLoad++ 2025 · 2025-06-23..06-24· [databases, kubernetes]
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slides:none on file

Describes how T-Bank shard a high-load customer-data service with tables of billions of rows by implementing sharding at the load-balancer layer in Kubernetes. Covers the technical challenges encountered during that rollout and the solutions used to deploy the change with minimal user-visible impact.

AI-written summary · about

  1. 0:00Introduction
  2. 4:43Vertical scaling problems
  3. 7:07What is sharding
  4. 11:19Sharding key choice
  5. 16:56App problems with sharding
  6. 21:06PostgreSQL replication
  7. 27:09Shard launch and migration
  8. 31:34Q&A
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