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🔧 The COUNT(DISTINCT) Problem in Postgres (and How HLL Fixes It)


Nachrichtenbereich: 🔧 Programmierung
🔗 Quelle: dev.to

Exact COUNT(DISTINCT) queries can crush Postgres at scale. In this post, I’ll show how HyperLogLog (HLL) gives you fast, tiny, and composable unique counts with ~1% error—saving time, CPU, and... [Weiterlesen]

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