Discover how companies like Instagram, Twitter, and Discord shard their databases to handle billions of users.
Let's see how real companies solve sharding in practice. These aren't theoretical examples - this is how the internet actually works!
Instagram's User Sharding:
shard_id = user_id % 4000Discord's Message Sharding:
Uber's Geographic Sharding:
The Common Pattern: All successful sharding strategies follow one rule - keep related data together on the same shard.
Key Insight: "The best sharding strategies mirror how users actually use your application - if data is accessed together, it should live together."
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