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News
Treating “one day” as a system primitive
19+ 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…...
I described 1,245 tables with an LLM and retrieval got worse
3+ hour, 43+ 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…...
Every text-to-SQL benchmark score you've seen was measured without access control
3+ hour, 43+ 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…...
Data Relationships, Data Modelling Schemas, and Joins in Power BI.
4+ hour, 44+ min ago (1280+ words) Data Modelling in Power BI What Data Modelling Means in Power BI Data modelling... Tagged with analytics, data, database....
Oracle Integration Cloud Integration Patterns
4+ hour, 34+ min ago (162+ words) Twelve reusable patterns, real-world examples, and implementation guidance for Oracle Integration... Tagged with architecture, cloud, software....
The database connection pool was configured with 50 connections, so why did the 20th request time…
3+ hour, 57+ min ago (30+ words) The database connection pool was configured with 50 connections, so why did the 20th request time out? Understanding how parallel database queries inside a single HTTP request can exhaust your …...
Our users’ phones were the backup: rebuilding a lost database from app caches
4+ hour, 44+ min ago (223+ words) How expired cache entries on readers’ devices, server logs, and a year-old dump were merged back into MongoDB without …...
Vanilla PostgreSQL vs Amazon Aurora PostgreSQL
5+ hour, 19+ min ago (1187+ words) At the application level, Amazon Aurora PostgreSQL looks like PostgreSQL. You connect with PostgreSQL drivers, run SQL, use transactions, indexes, MVCC. Underneath, it is a different database architecture. One sentence explains most of the difference: Vanilla PostgreSQL couples the database engine…...
Your app went viral. Adding servers made it worse. Here's why.
10+ hour, 26+ min ago (94+ words) It's midnight, someone huge shares your app, 100,000 people show up — and the page dies. You add three servers. It gets worse. The rule that finally made this click for me: before you add capacity, find out where the request is…...
Why Timestamps Lie in Distributed Systems (and How Logical Clocks Fix It)
10+ hour, 59+ min ago (476+ words) There's a line of code in almost every service that stores replicated data: def resolve(incoming,... Tagged with distributedsystems, backend, systemdesign, database....