https://www.yongjiexue.io/en/authors/vonng/Recent content on Yongjie XueHugoen-USFri, 11 Sep 2026 00:00:00 +0000https://www.yongjiexue.io/en/db/Fri, 28 Aug 2026 00:00:00 +0000https://www.yongjiexue.io/en/db/News, reports, surveys and best practices from the database industry — cutting through the marketing.https://www.yongjiexue.io/en/cloud/Sat, 15 Aug 2026 00:00:00 +0000https://www.yongjiexue.io/en/cloud/Stop paying the cloud tax and self-host like a pro — deep dives, cost analyses and incident write-ups.https://www.yongjiexue.io/en/pg/Thu, 10 Sep 2026 00:00:00 +0000https://www.yongjiexue.io/en/pg/PostgreSQL ecosystem news, plus development, operations, internals and tuning.https://www.yongjiexue.io/en/ai/Fri, 11 Sep 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/Everything about AI, agents, LLMs, vibe coding, AI4DB and DB4AI.https://www.yongjiexue.io/en/misc/Thu, 19 Mar 2026 00:00:00 +0000https://www.yongjiexue.io/en/misc/Essays, notes and personal writing — the things that are not about technology, or not only about it.https://www.yongjiexue.io/en/ai/local-ai-movement/Fri, 11 Sep 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/local-ai-movement/Anthropic’s threat report, OpenAI’s soap opera, the closure of the $200 subscription tier, and rising GPU and memory prices—all of this week’s events tell the same story.https://www.yongjiexue.io/en/pg/pgsql-cc-online/Thu, 10 Sep 2026 00:00:00 +0000https://www.yongjiexue.io/en/pg/pgsql-cc-online/pgsql.cc is live, with Chinese documentation for all 11 PostgreSQL major versions from 10 through 20, a redesigned mirror of the official website, and better full-text search. Kept in sync with upstream, with no ads.https://www.yongjiexue.io/en/ai/10x-subscription/Mon, 07 Sep 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/10x-subscription/Buying 10 AI subscriptions is easy. The real bottleneck is turning tokens into useful output—and using automation to scale your time, attention, and ability to judge the results.https://www.yongjiexue.io/en/ai/astra-reset/Fri, 04 Sep 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/astra-reset/As Astra began rolling out, Tibo announced one banked reset per day for paid users still waiting for access. I’m stocking up for when Astra arrives.https://www.yongjiexue.io/en/ai/sdd/Sat, 29 Aug 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/sdd/People often ask: how do I ensure quality when AI writes the code? My answer has four parts: documentation-driven development, adversarial review, brute-force testing, and complexity penalties.https://www.yongjiexue.io/en/db/catalog-bullshit/Fri, 28 Aug 2026 00:00:00 +0000https://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 +0000https://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 +0000https://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 +0000https://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 +0000https://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/ai/ai-machinegun-for-everyone/Thu, 20 Aug 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/ai-machinegun-for-everyone/In one month, my friend Jiang cobbled together four databases, an operating system, a programming language, a compiler, and a CPU—a microcosm of today’s AI frenzy.https://www.yongjiexue.io/en/ai/ai-after-10-years/Sun, 16 Aug 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/ai-after-10-years/Starting with the price curve of AI inference, this essay projects how the world will be repriced by 2036: intelligence will become as cheap and ubiquitous as electricity, while electricity itself, trust, accountability, attention, physical presence, and judgment become the truly scarce goods.https://www.yongjiexue.io/en/cloud/cloud-exit-2026/Sat, 15 Aug 2026 00:00:00 +0000https://www.yongjiexue.io/en/cloud/cloud-exit-2026/I spent years urging people to leave the cloud. Those who listened two years ago made a killing. Leaving has never been just about savings; it is about buying back your freedom. Cost curves move. Sovereignty does not.https://www.yongjiexue.io/en/cloud/waste/Fri, 14 Aug 2026 00:00:00 +0000https://www.yongjiexue.io/en/cloud/waste/People who leave Big Tech are not stupid. They have simply spent too long using a rented mental map. Only after leaving the platform do they discover that the map has to be returned.https://www.yongjiexue.io/en/ai/yield-with-agents/Wed, 12 Aug 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/yield-with-agents/Over the past month, I kept seven $200 AI subscriptions spinning—five paid, two comped—and burned through more than 100 billion tokens. Here is what came out: Silo, Pigsty, PGEXT, SOW, OINK, and a pile of code, packages, documentation, releases, products, and durable assets.https://www.yongjiexue.io/en/db/sow/Tue, 11 Aug 2026 00:00:00 +0000https://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 +0000https://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 +0000https://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/ai/codex-reset-end/Sat, 08 Aug 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/codex-reset-end/OpenAI’s Codex Reset spree is over. The free eggs are gone—but what did one month with seven AI subscriptions, three computers, and two AGI-class models actually produce?https://www.yongjiexue.io/en/db/long-live-silo/Thu, 06 Aug 2026 00:00:00 +0000https://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 +0000https://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/cloud/fastjson-boom/Fri, 31 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/cloud/fastjson-boom/FastJSON has failed again. When is “ship rough, scale hard, move fast” a defensible shortcut, and when does it become an engineering habit whose bill falls to whoever comes next?https://www.yongjiexue.io/en/cloud/rds-mysql-crash/Fri, 31 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/cloud/rds-mysql-crash/A reader’s RDS MySQL instance failed over twice in five days: the cloud provider’s own back-end monitoring query brought it down, and the instance failed again with the same symptoms after the provider promised to disable that collector.https://www.yongjiexue.io/en/cloud/huawei-iam/Sun, 26 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/cloud/huawei-iam/Huawei Cloud confirmed abnormalities affecting some International Site accounts during a scheduled IAM upgrade window. The timing is suggestive, but the causal link remains unconfirmed.https://www.yongjiexue.io/en/ai/open-weight/Sat, 25 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/open-weight/Jensen Huang used his first-ever tweet to back open weights. This is not a battle of faith. It is the compute and application layers pushing back against rent extraction by the model layer. The truly scarce technical asset is the right to exit—one no one else can unilaterally revoke.https://www.yongjiexue.io/en/ai/agi-milestone/Wed, 22 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/agi-milestone/An OpenAI agent’s attack on Hugging Face marks a milestone: what crossed the threshold was not merely model intelligence, but persistence that can be bought with compute, copied, and run in parallel.https://www.yongjiexue.io/en/ai/world-model/Mon, 13 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/world-model/Starting from the roots of “world” and “model,” this essay uses Pearl’s ladder of causation to redefine world models: they must capture not just space and time, but agents, interventions, and counterfactuals.https://www.yongjiexue.io/en/ai/reset-codex-claude/Mon, 13 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/reset-codex-claude/Codex reset its quotas again this morning and dropped the five-hour limit. Claude immediately extended Fable access through the 17th. When vendors fight, users win—don’t miss the window.https://www.yongjiexue.io/en/ai/rewrite-pg-in-rust/Sat, 11 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/rewrite-pg-in-rust/pgrust’s clean-room rewrite failed. Its mechanical port passed. The difference shows what AI can copy—and what it cannot.https://www.yongjiexue.io/en/ai/bicycle/Fri, 10 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/bicycle/Claude Fable and GPT-5.6 have arrived back to back, followed by repeated quota resets. How do you turn a fleeting Coding Plan windfall into real output? Here is my playbook for model specialization, adversarial review, spec-driven design, closed-loop verification, context management, and one person leading a crew of AIs.https://www.yongjiexue.io/en/pg/happy-30-birthday/Wed, 08 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/pg/happy-30-birthday/On July 8, 1996, the PostgreSQL community picked up the flame from Postgres95. Thirty years later, it has grown from a Berkeley research project into a default foundation of the global database ecosystem.https://www.yongjiexue.io/en/ai/deepseek-interview/Tue, 07 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/deepseek-interview/Today’s biggest tech drama began when Bojie Li criticized DeepSeek’s interview process on Twitter: he was asked to solve online-judge coding problems, then suspected of cheating. Add the DeepSeek name, and the story exploded.https://www.yongjiexue.io/en/pg/pg-pig-clone/Mon, 06 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/pg/pg-pig-clone/Pig v1.5 adds pig pg clone and pig pg fork, wrapping PostgreSQL 18’s instant cloning capabilities in an agent-native CLI.https://www.yongjiexue.io/en/pg/what-is-pg-distro/Sat, 04 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/pg/what-is-pg-distro/Starting with Linux distributions, this essay explains what a “PostgreSQL distribution” actually is: three layers, two paths, and one core idea.https://www.yongjiexue.io/en/ai/db-fs/Fri, 03 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/db-fs/File systems and databases have spent fifty years fighting and borrowing from each other. The agent era may seem to put file systems back on top, but the real winner may be databases that learn to speak the file system’s dialect: models provide understanding, databases provide guarantees, and discovery comes from a protocol layer where ls works on everything.https://www.yongjiexue.io/en/cloud/aliyun-dns/Wed, 01 Jul 2026 00:00:00 +0000https://www.yongjiexue.io/en/cloud/aliyun-dns/Alibaba Cloud’s free DNS tier allows 100,000 queries per day—just 1.15 QPS averaged out. One throttling notice was all it took for me to move my domains to Cloudflare.https://www.yongjiexue.io/en/ai/coding-plan/Tue, 30 Jun 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/coding-plan/Coding Plans remain one of the best opportunities in the AI era: a subscription can unlock compute worth many times its price, but that window is already narrowing.https://www.yongjiexue.io/en/cloud/ali-scam/Mon, 15 Jun 2026 00:00:00 +0000https://www.yongjiexue.io/en/cloud/ali-scam/Scammers hijacked Qianwen’s trusted identity, then used a single Xianyu QR code to run a seamless phishing scam through official apps and trusted domains across Alibaba’s ecosystem. I hope this case helps more people avoid the same trap.https://www.yongjiexue.io/en/ai/mind-price/Thu, 11 Jun 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/mind-price/AI’s economic significance is not merely that it has become smarter, but that the price of average cognition is collapsing. A productivity explosion is almost certain; whether it becomes broad prosperity depends on whether distribution catches up.https://www.yongjiexue.io/en/ai/oss-karma/Thu, 11 Jun 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/oss-karma/AI is driving the cost of producing code toward zero. It cannot compress time, track records, or accountability. The real value of open source is not yesterday’s code, but a system trusted to deliver on tomorrow’s promises.https://www.yongjiexue.io/en/ai/claude-fable-impression/Wed, 10 Jun 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/claude-fable-impression/Claude Fable is genuinely insightful and deserves to be called the new SOTA. But its high price, dynamic downgrades, limited subscription window, and mandatory data retention badly undermine the experience.https://www.yongjiexue.io/en/ai/cerebellum/Wed, 10 Jun 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/cerebellum/The cerebellum changed how I see AI’s frontier: LLMs have already absorbed humanity’s explicit knowledge and are beginning to acquire interventional data through agentic RL. What they still lack is a vessel for individual history.https://www.yongjiexue.io/en/pg/extensions-for-everyone/Wed, 20 May 2026 00:00:00 +0000https://www.yongjiexue.io/en/pg/extensions-for-everyone/A field report on the PostgreSQL extension ecosystem: 1,617 discovered projects, 511 deliverable extensions, and the shared delivery layer needed to make extensibility work for users, authors, vendors, and PostgreSQL hackers.https://www.yongjiexue.io/en/pg/pgcfd2026-intro/Tue, 19 May 2026 00:00:00 +0000https://www.yongjiexue.io/en/pg/pgcfd2026-intro/PGConf.Dev 2026 opens in Vancouver as the PostgreSQL project marks its 30th anniversary. I will also be speaking on Extensions for Everyone.https://www.yongjiexue.io/en/ai/move-to-codex/Fri, 08 May 2026 00:00:00 +0000https://www.yongjiexue.io/en/ai/move-to-codex/When my $200 Claude Code Max subscription expired, I canceled it and moved my primary workflow to Codex. The only way to know which one is better is to put it to work.