https://www.yongjiexue.io/en/db/Recent content in Database Guru on Yongjie XueHugoen-USFri, 28 Aug 2026 00:00:00 +0000https://www.yongjiexue.io/en/db/catalog-bullshit/Fri, 28 Aug 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/catalog-bullshit/Snowflake blames the lakehouse’s governance gaps on multiple engines and turns the Catalog into a new billing layer. But the core of an Iceberg Catalog is just a metadata-pointer CAS; the real governance gap comes from separating the control plane from the data path.https://www.yongjiexue.io/en/db/aws-get-duckdb/Wed, 26 Aug 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/aws-get-duckdb/AWS bought the people who build the duck and left the duck itself to the foundation.https://www.yongjiexue.io/en/db/apple-m5-ultra/Tue, 25 Aug 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/apple-m5-ultra/No teaser, no rumors—the website simply changed. For local AI, this may be the most important machine of the year.https://www.yongjiexue.io/en/db/omarchy-desktop/Mon, 24 Aug 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/omarchy-desktop/I installed Omarchy, then removed it. Why? Who is it for, and who isn’t it for? Does the Linux desktop still have a future?https://www.yongjiexue.io/en/db/thank-oracle/Sun, 23 Aug 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/thank-oracle/Starting with Stonebraker’s remark that PostgreSQL should “thank Oracle,” this essay looks at the community’s unusual governance model and the challenges it now faces.https://www.yongjiexue.io/en/db/sow/Tue, 11 Aug 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/sow/The hard part of maintaining a PostgreSQL distribution is not compiling packages. At 100,000 artifacts, deduplication, indexing, snapshots, atomic cutovers, and incremental publishing become the real challenge. SOW puts all of that into one self-contained binary, turning RPM and DEB repository management from ad hoc directory scripts into a recoverable, auditable state system.https://www.yongjiexue.io/en/db/oink-release/Mon, 10 Aug 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/oink-release/After six years of trying eight approaches, I used Codex to combine Docsy’s engineering depth, Fumadocs’ modern UX, and Hugo’s simple delivery model into OINK.https://www.yongjiexue.io/en/db/valkey-bug/Sun, 09 Aug 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/valkey-bug/Codex found an old Valkey bug affecting Debian’s packages and every official Valkey .deb. One line in a packaging patch releases a glibc allocation with Valkey’s own deallocator, so the server either segfaults or silently stops accepting writes until you restart it.https://www.yongjiexue.io/en/db/long-live-silo/Thu, 06 Aug 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/long-live-silo/Six months after forking MinIO, Silo has completed its rebrand, fixed 14 security issues, restored and improved the console, and grown from an emergency fork into an independent open-source project.https://www.yongjiexue.io/en/db/the-you-know-who/Mon, 03 Aug 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/the-you-know-who/How did “far, far ahead,” “homegrown,” “innovation,” “domestic,” and “open source” become their own antonyms in China’s tech industry? This essay traces a systemic inflation of language and credibility—and the bill it has left for engineering, open source, and the industry’s ability to correct itself.https://www.yongjiexue.io/en/db/mysql-97-bye/Tue, 21 Apr 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/mysql-97-bye/MySQL 9.7 is the first LTS release in the 9.x line. Its vector support is still all show, its years-late optimizer is disabled by default, and three years of Innovation Releases have produced remarkably little.https://www.yongjiexue.io/en/db/minio-promise-kept/Fri, 17 Apr 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/minio-promise-kept/Two months after forking MinIO, pgsty/minio ships patches for four CVEs and related security issues. No new features — just working builds, a restored console, and timely security fixes.https://www.yongjiexue.io/en/db/agent-state-db/Fri, 20 Mar 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/agent-state-db/Put an AI agent’s working directory, configuration, and memory on a PGFS mount, and you are effectively storing its state in PostgreSQL. That gives you not only a PITR “time machine,” but also a shared workspace and shared memory for multiple agents across multiple devices.https://www.yongjiexue.io/en/db/claude-360-claw/Mon, 16 Mar 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/claude-360-claw/360’s newly released AI Agent product shipped a public installer containing the private key for its *.myclaw.360.cn wildcard certificate. Public verification and local reproduction also exposed inconsistencies in the OCSP revocation path.https://www.yongjiexue.io/en/db/ontology-again/Sun, 15 Mar 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/ontology-again/Palantir’s Ontology is, technically, data modeling. The more interesting question is how a philosophy term got repurposed to market system integration and data modeling, and why that story is so likely to turn into another round of concept inflation in China’s tech ecosystem.https://www.yongjiexue.io/en/db/insforge/Wed, 11 Mar 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/insforge/InsForge tries to package PostgreSQL, auth, storage, deployment, and an MCP-facing semantic layer into a backend stack designed for AI agents. It feels like a Supabase rebuilt for the vibe-coding era.https://www.yongjiexue.io/en/db/ontology-bullshit/Sat, 21 Feb 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/ontology-bullshit/Ontology is largely a data-modeling method. In enterprise practice, much of it overlaps with familiar database concepts, while the framing can make it feel newer and more differentiated than it really is.https://www.yongjiexue.io/en/db/minio-resurrect/Sat, 14 Feb 2026 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/minio-resurrect/MinIO’s repo is officially archived and abandoned. And how AI Agents helped bring it back from the dead. This post explains how a community fork restores the admin console and ships binaries via CI/CD pipeline.https://www.yongjiexue.io/en/db/db-year-review-2025/Wed, 24 Dec 2025 00:00:00 +0000Andy PavloMike StonebrakerYongjie Xuehttps://www.yongjiexue.io/en/db/db-year-review-2025/A conversation between Mike Stonebraker (MIT CSAIL, Turing Award Winner, Creator of PostgreSQL), Andy Pavlo (Carnegie Mellon University), and the DBOS team.https://www.yongjiexue.io/en/db/agent-native-db/Sun, 21 Dec 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/agent-native-db/The bottleneck for AI agents is not the database kernel, but integration above it. Muscle memory (in-database computation), associative memory (vector-graph fusion), and the courage to experiment (Git for Data) will be critical—none of them requires a new engine.https://www.yongjiexue.io/en/db/mysql-baijiu/Sat, 20 Dec 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/mysql-baijiu/MySQL is to the internet what baijiu is to China: harsh, hard to swallow, yet worshipped because culture demands obedience. Both are loyalty tests—will you endure discomfort to fit in?https://www.yongjiexue.io/en/db/victoria-stack/Wed, 17 Dec 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/victoria-stack/VictoriaMetrics is brutally efficient—using a fraction of Prometheus + Loki’s resources for multiples of the performance. Pigsty v4 swaps to the Victoria stack; here’s the beta for anyone eager to try it.https://www.yongjiexue.io/en/db/minio-alternative/Mon, 08 Dec 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/minio-alternative/MinIO just entered maintenance mode. What replaces it? Can RustFS step in? I tested the contenders so you don’t have to.https://www.yongjiexue.io/en/db/minio-is-dead/Thu, 04 Dec 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/minio-is-dead/MinIO announces it is entering maintenance mode, the dragon-slayer has become the dragon – how MinIO transformed from an open-source S3 alternative to just another commercial software companyhttps://www.yongjiexue.io/en/db/ai-question/Tue, 02 Dec 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/ai-question/Your ability to ask questions—and your taste in what to ask—determines your position in the AI era. When answers become commodities, good questions become the new wealth. We are living in the moment this prophecy comes true.https://www.yongjiexue.io/en/db/tuna-mirror-site/Sat, 22 Nov 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/tuna-mirror-site/In serious production you can’t rely on an upstream that explicitly says “no guarantees.” When someone says “don’t count on me,” the right answer is “then I’ll run it myself.”https://www.yongjiexue.io/en/db/no-docker-pg/Thu, 20 Nov 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/no-docker-pg/Tons of users running the official docker postgres image got burned during recent minor version upgrades. A friendly reminder: think twice before containerizing production databases.https://www.yongjiexue.io/en/db/guru/Fri, 08 Aug 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/guru/The database world is full of hype and marketing fog. This column cuts through it with blunt commentary, case studies, and technical deep dives.https://www.yongjiexue.io/en/db/car-autopilot-test/Sat, 26 Jul 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/car-autopilot-test/Imagine a “closed-course” shootout for domestic databases and clouds, the way Dongchedi just humiliated 30+ autonomous cars. This industry needs its own stress test.https://www.yongjiexue.io/en/db/ai-dba-job/Mon, 30 Jun 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/ai-dba-job/Who will be revolutionized first - OLTP or OLAP? Integration vs specialization, how to choose? Where will DBAs go in the AI era? Feng’s views from the HOW 2025 conference roundtable, organized and published.https://www.yongjiexue.io/en/db/db-for-ai/Tue, 03 Jun 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/db-for-ai/The database for the AI era has been settled. Capital markets are making intensive moves on PostgreSQL targets, with PG having become the default database for the AI era.https://www.yongjiexue.io/en/db/openai-pg/Mon, 19 May 2025 00:00:00 +0000Bohan Zhanghttps://www.yongjiexue.io/en/db/openai-pg/At PGConf.Dev 2025, Bohan Zhang from OpenAI shared a session titled Scaling Postgres to the next level at OpenAI, giving us a peek into the database usage of a top-tier unicorn.https://www.yongjiexue.io/en/db/bad-etcd/Wed, 07 May 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/bad-etcd/Plenty. If you’re rolling your own Kubernetes, odds are you’ll crash because etcd ships with a 2 GB time bomb.https://www.yongjiexue.io/en/db/mysql-vs-pgsql/Thu, 17 Apr 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/mysql-vs-pgsql/A 2025 reality check on where PostgreSQL stands relative to MySQL across features, performance, quality, and ecosystem.https://www.yongjiexue.io/en/db/pg-kiss-duckdb/Wed, 12 Mar 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/pg-kiss-duckdb/If you ask me, we’re on the brink of a cosmic collision in database-land, and Postgres + DuckDB is the meteor we should all be watching.https://www.yongjiexue.io/en/db/oracle-pg-xact/Thu, 27 Feb 2025 00:00:00 +0000Laurenz Albehttps://www.yongjiexue.io/en/db/oracle-pg-xact/The PG community has started punching up: Cybertec’s Laurenz Albe breaks down how Oracle’s transaction system stacks against PostgreSQL.https://www.yongjiexue.io/en/db/db-is-the-arch/Wed, 22 Jan 2025 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/db-is-the-arch/Databases are the core of business architecture, but what happens if we go further and let databases become the business architecture itself?https://www.yongjiexue.io/en/db/7-week-7-db/Tue, 03 Dec 2024 00:00:00 +0000Matt Blewitthttps://www.yongjiexue.io/en/db/7-week-7-db/Is PostgreSQL the king of boring databases? Here are seven databases worth studying in 2025: PostgreSQL, SQLite, DuckDB, ClickHouse, FoundationDB, TigerBeetle, and CockroachDB—each deserving a week of deep exploration.https://www.yongjiexue.io/en/db/poker-24/Tue, 03 Dec 2024 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/poker-24/A fun but devious challenge: solve the 24-point card game in SQL. Here is the PostgreSQL answer.https://www.yongjiexue.io/en/db/supabase/Mon, 25 Nov 2024 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/supabase/Supabase is great, own your own Supabase is even better. A tutorial for self-hosting production-grade supabase on local/cloud/ VM/BMs.https://www.yongjiexue.io/en/db/linus-ban-ru/Fri, 25 Oct 2024 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/linus-ban-ru/The Linux community is essentially imperial — and Linus himself is the earliest and most successful technical dictator. People are used to Linus’s generosity but forget this point.https://www.yongjiexue.io/en/db/bio-core-cpu-core/Sat, 07 Sep 2024 00:00:00 +0000David Heinemeier Hansson (DHH)https://www.yongjiexue.io/en/db/bio-core-cpu-core/Programmers are expensive, scarce biological computing cores, the anchor point of software costs — please prioritize optimizing biological cores before optimizing CPU cores.https://www.yongjiexue.io/en/db/bad-mongo/Wed, 04 Sep 2024 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/bad-mongo/MongoDB has a terrible track record on integrity, lackluster products and technology, gets beaten by PG in correctness, performance, and functionality, with collapsing developer reputation, declining popularity, stock price halving, and expanding losses. Provocative marketing against PG can’t save it with “good marketing.”https://www.yongjiexue.io/en/db/mongo-powered-by-pg/Tue, 03 Sep 2024 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/mongo-powered-by-pg/MongoDB 3.2’s analytics subsystem turned out to be an embedded PostgreSQL database? A whistleblowing story from MongoDB’s partner about betrayal and disillusionment.https://www.yongjiexue.io/en/db/cve-2024-6387/Thu, 04 Jul 2024 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/cve-2024-6387/This vulnerability affects EL9, Ubuntu 22.04, Debian 12. Users should promptly update OpenSSH to fix this vulnerability.https://www.yongjiexue.io/en/db/db-china/Thu, 25 Apr 2024 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/db-china/Friends often ask me, can Chinese domestic databases really compete? To be honest, it’s a question that offends people. So let’s try speaking with data - I hope the charts provided in this article can help readers understand the database ecosystem landscape and establish more accurate proportional awareness.https://www.yongjiexue.io/en/db/cheap-polar/Thu, 25 Apr 2024 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/cheap-polar/Today we discuss the fair pricing of commercial databases, open-source databases, cloud databases, and domestic Chinese databases.https://www.yongjiexue.io/en/db/redis-oss/Mon, 25 Mar 2024 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/redis-oss/Redis “going non-open source” is not a disgrace to Redis, but a disgrace to “open source/OSI” and even more so to public cloud. What truly matters has always been software freedom, while open source is just one means to achieve software freedom.https://www.yongjiexue.io/en/db/bad-mysql/Thu, 28 Dec 2023 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/bad-mysql/MySQL’s transaction ACID has flaws and doesn’t match documentation promises. This may lead to serious correctness issues - use with caution.https://www.yongjiexue.io/en/db/db-in-k8s/Wed, 06 Dec 2023 00:00:00 +0000Yongjie Xuehttps://www.yongjiexue.io/en/db/db-in-k8s/Whether databases should be housed in Kubernetes/Docker remains highly controversial. It has fundamental drawbacks with stateful services.