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Databases

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Intermediate9 hours

Learn how relational, NoSQL, vector, and cloud databases work — and how to pick, design, and query the right one for your application.

Articles

A query that takes 4 seconds without an index takes 0.2ms with one. That's a 20,000x improvement from a single line of SQL. Indexes are the most impactful perfo

Jul 4, 202614 min read
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The CAP theorem states that a distributed system can guarantee at most two of three properties: Consistency (every read returns the latest write), Availability

Jul 4, 202610 min read
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Picking a database is not about finding the fastest engine — it is about matching storage to the shape of your data. Start with one question: is your data struc

Jul 1, 202618 min read
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