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DEV Community
dev.to > gouranga-das-khulna > distributed-locks-4148

Distributed Locks

1+ hour, 36+ min ago (110+ words) One-liner: A distributed lock ensures that only one node in a cluster can perform a critical operation at a time — preventing race conditions across services. In a single-server world, a mutex or semaphore handles concurrency. But in distributed systems: Classic…...

DEV Community
dev.to > mislam-dev > day-8-relational-database-101-postgresql-internals-j9c

Day 8 - Relational Database 101 - PostgreSQL Internals

2+ hour, 14+ min ago (1576+ words) একবার একটু technological দিকে আসি, আপনি যখন Facebook বা LinkedIn-এ কাউকে message করেন তখন সেটা সরাসরি তার কাছে send হয়। Reason হচ্ছে আপনারা connected। এখানে আপনি directly message ত…...

DEV Community
dev.to > jones_chen_592558a62a5c44 > treating-one-day-as-a-system-primitive-1eba

Treating “one day” as a system primitive

2+ hour, 35+ min ago (165+ words) For most AI apps, the unit of time is a request. A user sends a message, the model responds, and the workflow ends. Cogweald is designed around a different primitive: one real day. Each world can advance by at most…...

Medium
medium.com > @alakov.ilia > explain-describes-a-query-production-is-everything-else-thats-running-6b307b63c330

EXPLAIN Describes a Query. Production Is Everything Else That’s Running.

1+ hour, 24+ min ago (1398+ words) A while back I wrote about migrating a terabyte of banking data from Oracle to PostgreSQL with no downtime. The part people …...

Medium
medium.com > @ashrayadhikari > i-replaced-chroma-qdrant-and-pinecone-with-a-sqlite-file-1ae5210c85d4

I Replaced Chroma, Qdrant, and Pinecone With a SQLite File

1+ hour, 20+ min ago (165+ words) I needed a vector DB that didn’t require a daemon. SQLite was already there. Every RAG tutorial starts the same way. Step one: install …...

DEV Community
dev.to > ashish_sinha_5241c7673d93 > i-described-1245-tables-with-an-llm-and-retrieval-got-worse-58a

I described 1,245 tables with an LLM and retrieval got worse

5+ hour, 59+ min ago (1126+ words) The cataloguing step is supposed to be the easy win. You have a schema whose tables are called ecm_template_link and v_pmpm, your users ask questions in English, and the gap between those two vocabularies is why retrieval misses. So you point a…...

DEV Community
dev.to > ashish_sinha_5241c7673d93 > every-text-to-sql-benchmark-score-youve-seen-was-measured-without-access-control-37h

Every text-to-SQL benchmark score you've seen was measured without access control

5+ hour, 59+ min ago (955+ words) Spider, BIRD, LiveSQLBench. If you have evaluated a text-to-SQL system in the last five years you have quoted a number from one of them. All three ask the same question: given a schema and an English question, does the system…...

DEV Community
dev.to > lucy_anyango_d6aa9788c23a > data-relationships-data-modelling-schemas-and-joins-in-power-bi-1hkp

Install