PostgreSQL's log rotation has three parameters that only make sense together: one rotates at clock boundaries, one at file sizes, and one decides whether to…

Rx.NET 7.0 has been released with a narrowly focused change aimed at reducing deployment size for Windows applications. The new version separates WPF, Windows Forms, UWP, and Windows Runtime...

本文介绍Ceph BlueStore写路径，涵盖queue_transactions()到aio完成的流程，重点分析直写与deferred两条分叉路径。直写适用于大块新分配，数据先落盘再提交元数据；deferred用于小写或覆盖，先提交KV再异步落盘。文章还讨论min_alloc_size配置、checksum计算时机、压缩处理及deferred路径的带宽竞争问题。

本文探讨视觉Transformer（ViT）的核心设计：将图像切分为patch作为token，并分析其代价。关键点包括：patch大小与分辨率决定序列长度，影响注意力机制的二次方计算成本；CNN的归纳偏置在小数据上更优，而ViT需大数据；DeiT通过数据增强和蒸馏提升训练效率；Swin通过窗口注意力降低复杂度。文章还讨论了位置编码失效、层级结构及未来高分辨率挑战。

From sneakers to crash test dummies, many everyday designs were developed based on the male body. Nike’s former global creative director explains why better design starts with broader perspectives.

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....

Manufacturing polyethylene is a highly competitive business. Success depends greatly on access to feedstocks, yet investment doesn’t always follow economics.

Lucide has released version 1.0 of its open-source icon toolkit, marking its first stable major release. The update features over 1,600 icons and removes trademarked brand icons due to legal and...

effective_cache_size doesn't allocate memory, reserve RAM, or control runtime behavior—it merely whispers a number to the query planner to make it smarter…

A parameter you cannot change. block_size lives in the “Preset Options” section of the docs, alongside its read-only cousins like data_checksums, wal_block_size, and server_version. It reports the...

Dropbox reduced its backend monorepo from 87GB to 20GB by optimizing Git delta compression in collaboration with GitHub. The changes improved clone times, CI performance, and developer velocity,...

本文讨论了PostgreSQL中的pg_column_size()函数及其在处理TOAST（超大属性存储技术）时的表现。该函数返回存储值所需的字节数，但对于TOAST值，仅返回指针大小（18字节），而非原始数据大小。文章强调物理存储大小与逻辑大小之间的差异，并建议在分析大表时使用TABLESAMPLE进行抽样以提高效率。最后，作者计划提交文档补丁，以澄清pg_column_size()的使用。

A new McKinsey analysis suggests that the semiconductor industry is poised for record-breaking growth—but for companies, success will require the right segment-specific strategies.

iPhone Screen Size Reference This page lists common Apple iPhone models and their nominal pixel dimensions. Use these values as a reference when preparing wallpapers or design assets. iPhone...

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)