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Chapter 05 · Databases

Data at Any Scale

Design databases that never let you down — SQL vs NoSQL, indexing, query optimisation, replication and sharding, in plain language.

PostgreSQLMongoDBRedisIndexingReplicationSharding
Databases Articles

All guides in this chapter

📅 2026-06-17⏱ 5 min read

Complete Databases Guide with Real-World Examples

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📅 2026-06-19⏱ 7 min read

SQL vs NoSQL: Which Database Should You Choose in 2026?

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