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Operational simplicity: the cross-key tax, quantified
2+ hour, 9+ min ago (107+ words) Part 6 of 7 · ← Memory efficiency · Next: When to use which → Part 6. Throughput and latency are... Tagged with redis, database, performance, benchmarking....
RAMDeck Knowledge Base Sharding: Splitting a Huge Context Across Your Devices
9+ hour, 23+ min ago (12+ words) YouTube...
Ditch H2: PostgreSQL Repository Tests with Testcontainers and @ServiceConnection in Spring Boot 4
2+ hour, 19+ min ago (204+ words) Your repository tests are green. Then production throws a column “metadata” is of type jsonb but expression is of type character varying…Continue reading on Medium » Ditch H2: PostgreSQL Repository Tests with Testcontainers and @ServiceConnection in Spring Boot 4 Your repository tests…...
AI Agent Memory: Sliding Windows, Summaries, and Vector Storage
7+ hour, 6+ min ago (623+ words) The agent we built in Post #4 has one big problem — the moment the script ends, it forgets everything. Next time you run it, it starts from zero. No memory of past conversations, no retained facts, nothing. For a quick experiment…...
Vector Store: How Similarity Becomes Something You Can Actually Search
2+ hour, 56+ min ago (290+ words) A beginner’s guide to how vector stores make embeddings searchable while preserving their connection to the passages and …...
Distributed Locks
7+ hour, 10+ 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…...
Day 8 - Relational Database 101 - PostgreSQL Internals
7+ hour, 48+ 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…...
Treating “one day” as a system primitive
8+ hour, 10+ 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…...
When a Zero-Parameter Cache Overtakes a Transformer
8+ hour, 10+ min ago (574+ words) The question this series exists to answer, put in a form that can be measured: a transformer sees a fixed 64-token window, a count table over the current document sees the whole document, and as documents get longer, how much…...
Why Parameterized Queries Matter for SQL Security
8+ hour, 9+ min ago (559+ words) SQL injection is one of the classic examples of what can happen when an application mixes user input directly into a database query. The underlying problem is simple. The application expects data. The database may interpret part of that data…...