Why PostgreSQL logs entire pages after crashes and why turning it off is riskier than it sounds.

拆解 Pager 作为 B-Tree 与操作系统文件之间的契约层：page cache 命中/未命中路径、脏页生命周期与提交前的可回滚保证，并与 PG shared_buffers、InnoDB Buffer Pool 的跨进程共享模型对照。

本文探讨了Trino查询引擎的执行流程，包括分析、计划、分片和调度等阶段，重点介绍了Iceberg表的元数据处理及其对查询性能的影响。通过分析SqlQueryExecution的生命周期，阐明了SQL查询如何转化为分布式执行计划，并强调了EXPLAIN和EXPLAIN ANALYZE的使用，以优化查询效率。

Two recent Linux kernel vulnerabilities have been disclosed: Copy Fail (CVE-2026-31431) on April 29, 2026, and Dirty Frag (CVE-2026-43284 and CVE-2026-43500) on May 7, 2026. Both allow local users...

Don’t remember why you have all those webpages open? Now you can leave yourself a note for any tab. Tab Notes — our latest experimental feature in Firefox — are designed to help you remember,...

Claude Code 将 PostgreSQL 的全页写入（FPW）替换为 MySQL 的双写缓冲（DWB），结果显示性能下降了三倍。FPW 和 DWB 在处理 Torn Page 问题上策略不同，FPW 需要频繁检查点，影响性能，而 DWB 通过后台写入减少用户感知的延迟。测试结果表明，DWB 在高并发场景下性能优于 FPW，且延迟更低。

For years now pgAdmin builds on Windows have been code signed using a certificate installed on a build machine in AWS. That certificate is expiring, so I had to look for a new one (I no longer...

本文探讨如何在 Flutter 项目中使用 OpenCV 4.5.2 进行图像处理，并满足 Google 2025 年的 16KB 页面大小规范。通过自定义插件直接调用 C++ API，避免使用过时的 Java 绑定。关键在于编译时启用 ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES，以确保生成符合要求的动态库。

Building OpenCV for Android from Source (with Extra Modules and 16KB Page Size Support)

We're constantly working to simplify the search results page, so that it's quick and easy to find the information and websites you're looking for. As part of this effort, we regularly...

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...