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A deep dive into the Redlock algorithm for safe distributed locking across multiple Redis nodes, including failure modes, clock drift, and the fencing token fix.
Compare cache-aside and write-through caching with Redis, including consistency trade-offs, TTL strategy, and when to use each pattern.
See why a query without an index scans every row, how an index turns it into a fast lookup, and how to read EXPLAIN to tell the difference.
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