Section 01
Relational Databases
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The Query Gets Slower Every Month
Medium
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Too Many Connections
Medium
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Checkout vs Analytics
Hard
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Choose the Relational Model
Medium
Section 02
Database Scaling & Replication
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Reads Are Crushing the Primary
Medium
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The Replica Is Stale
Medium
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Replica Lag During Import
Hard
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Fail the Primary
Hard
Section 03
Partitioning & Sharding
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The Write Ceiling
Medium
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Shard 7 Is Melting
Hard
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The Newest Shard Is Always Hot
Hard
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Cross-Shard Checkout
Hard
Section 04
Object Storage & File Systems
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Stop Putting Videos in PostgreSQL
Medium
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Millions of Tiny Files
Medium
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Shared Filesystem Bottleneck
Medium
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Durability vs. Temporary Data
Medium