Uber has redesigned shard placement in M3DB with fixed size subclusters to limit the impact of node failures, maintenance, and cluster scaling. The approach bounds shard dependencies, preserves...

PostgreSQL famously does not implement query hints. This is about 95% true, and join_collapse_limit is the other 5%: set it to 1, and the planner joins your tables in exactly the order you wrote...

PostgreSQL 17 introduced read streams that combine adjacent disk blocks into larger I/O requests.

本文介绍Envoy数据面代理的扩展机制，涵盖Wasm、Lua、ext_authz和限流过滤器。Wasm提供沙箱隔离但属实验特性；Lua适合可信粘合逻辑但需防路由缓存绕过鉴权；ext_authz将决策移至外部服务；限流分本地和全局两种。选型需权衡隔离性、延迟和信任域，热点路径慎用Wasm。

AWS Lambda can now reference deployment packages directly in customer-owned S3 buckets, removing the per-Region code storage quota and raising the managed default from 75 GB to 300 GB....

PostgreSQL's `gin_fuzzy_search_limit` silently returns a random subset of matching rows instead of all results—a dangerous trade of correctness for speed that…

Subqueries in FROM clauses get flattened into the outer query by default—but only if the resulting join problem stays small enough.

VS Code 1.123 adds a two-hour delay before auto-updating extensions to newly published versions, creating a revocation window against supply chain attacks. The delay does not apply to trusted...

Three autovacuum parameters control how often PostgreSQL vacuums, how hard it works, and how long it pauses.

Microsoft recently announced it’s pulling back Copilot from several of its core Windows apps — Photos, Notepad, the Snipping Tool, and Widgets. Rolling back these forced AI integrations is the...

In our website, we see many crawlers which pretends like human trying get contents. These crawlers are not well known like Google/Bing/Facebook etc. I can identify those crawler's IP and they are...

Discover how to tame big tables using LIMIT and OFFSET in MySQL! This post makes pagination easy for newcomers, using friendly library metaphors, step-by-step SQL examples, and practical tips to...

MySQL的分页方式主要有Offset/Limit和游标分页。Offset/Limit简单易用，但在数据变动时可能导致数据漂移，且在深度分页时性能下降。游标分页通过记录最后一条记录的游标来避免这些问题，适合动态数据集。选择分页方式应根据具体应用场景和性能需求。

In my first blog in this three-part series, “Agentic AI and the IT Balancing Act: Saving Costs While Prioritizing People,” we explored how agentic AI can reduce the operational burden so people...

本研究针对限价单簿（LOB）表示学习中的特征提取和通用性不足问题，提出了标准化基准LOBench，并利用中国A股市场数据进行评估。研究展示了有效提取可转移特征的方法及其在不同任务中的优势，为未来研究提供了可复制的框架和指导。