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Redis Cluster enforces a single database (DB 0) because its slot‑based sharding model relies on a global 16,384‑slot map, and supporting multiple databases would break slot consistency, migration, and scalability, so developers must use key prefixes, separate instances, or multiple clusters to achieve logical isolation.
The article traces the historical origins of common Unix command names—grep, awk, dd, sed, tar, biff, less, fsck, ping, tee, .bashrc, daemon, and touch—explaining how each abbreviation, acronym, or reference reflects early Unix editors, IBM JCL, hacker culture, or functional descriptions.
The article provides a comprehensive PostgreSQL operational self‑checklist covering CPU, memory, generic plans, idle connections, autovacuum, checkpoint and bgwriter tuning, AI workload handling, index building, replication, migration, partition management, and observability, with concrete examples, benchmarks, and practical commands.
The article explains that Java micro‑service projects feel a whole order of magnitude slower for AI‑assisted coding because they rely on cloud‑only infrastructure, and it presents a five‑principle methodology—dependency inversion, zero‑intrusion profiles, CLI‑first tools, local adapters, and verification scripts—to create a local Harness environment that lets AI agents verify and iterate code autonomously.
Brendan Burns recounts how he convinced Google to back Kubernetes, built the MVP in five days, navigated open‑source governance, tackled technical challenges like Etcd and declarative design, expanded the platform for AI workloads, and reflects on why even successful software like Kubernetes inevitably faces obsolescence.
The article chronicles how Andrew Tridgell, the retired creator of rsync that safeguards global backups, wrestles with a flood of AI‑generated security reports, rapidly patches critical vulnerabilities, faces community backlash over compatibility issues, and reflects on the risks of relying on a single maintainer for essential infrastructure.
In PostgreSQL versions prior to 14, a DELETE without a partition filter on a table with 20,000 partitions caused the server to allocate over 120 GB of memory within 60 seconds; the article shows how to reproduce the issue, diagnose it with MemoryContextStat and perf, and explains the fix introduced in PG14.
The article provides a detailed 2026 H1 review of global database trends, highlighting the shift to AI‑native and lake‑house architectures, summarizing major version releases across RDBMS, NoSQL, big‑data ecosystems and domestic solutions, and analyzing their technical features, compliance, performance and market implications.
A CFO used Claude Code to launch a SaaS product in two days, but a hidden bug caused the system to repeatedly retry successful LLM calls, turning a single day's AI usage into a month's worth of server expenses, prompting a detailed post‑mortem on cloud cost and retry‑storm pitfalls.
Databasus is an open‑source backup management platform that unifies PostgreSQL, MySQL, MariaDB and MongoDB backups with a web UI, offering logical, physical and incremental backups, automated scheduling, AES‑256‑GCM encryption, multi‑cloud storage, RBAC collaboration, and optional agents for secure, out‑bound connections.
