With Web browsers finally supporting HDR display, we spent the past half year rewriting Realsee's VR rendering engine from scratch with WebGPU, delivering real HDR to the browser screen — the first true HDR in panoramic VR. Different from the HDR you know from shooting, we call it Space HDR.
with 0 CommentAI uncovered an RCE that hid inside PHP for over a decade — unauthenticated, and triggered before any application code runs. This post walks through RINIT ordering, session.upload_progress, dangling pointers and heap forgery, showing how a use-after-free becomes remote code execution.
with 0 CommentYac 3.0 发布， 进一步优化了单机 PHP 共享内存缓存的核心读写路径：引入 Inline 存储，让短 key 携带短字符串和 double 值时不必分配 values block；用 Versioned Snapshot 降低读路径协调成本；通过 Memory Epoch 在可证明数据稳定时跳过 CRC-32C，并保留必要的校验 fallback；同时统一内部 serializer，并新增 Yac::has() 等 API。基准测试中，Yac 3.0 相比 2.4.2 在 6B 到 8KB 的匹配负载中几何平均吞吐提升 42.3%，常见小值路径最高提升 95.4%。
with 0 CommentYac 3.0 further optimizes the core read and write paths of its single-node shared-memory PHP cache. Inline storage, versioned snapshots, epoch-based CRC validation, a new internal serializer, and Yac::has() deliver a 42.3% geometric-mean throughput improvement over Yac 2.4.2 across matched 6 B to 8 KB workloads, with gains of up to 95.4% on common small-value paths.
with 0 CommentYac 2.4.0 is out. It started with my blog cache being flooded by empty arrays: WordPress search negative caches and Akismet's recheck cron keep writing entries nobody reads, eating values memory and triggering recycles. The headline change is embedded values — small scalars are encoded directly into the slot's pointer word and never touch the values area. Also: LZ4 replaces FastLZ (~3.5x faster decompression), get() gains $default, and dump() gains pagination plus per-entry hits/atime stats. Mixed-workload reads are up 70%, and my blog's values memory dropped from 23.5M to 12.4M.
with 0 CommentEvery Memcached read costs WordPress a localhost TCP round-trip plus protocol handling. After switching this blog to the shared-memory cache Yac, measured throughput rose ~19% — and one more cache service to maintain was gone.
with 0 CommentWechatian is an Obsidian plugin that connects WeChat and your Obsidian vault in both directions with no third-party relay: text, images and article links sent from WeChat are clipped into the vault automatically, and any program that can write a file can send you WeChat messages via a file outbox through Tencent's ilink gateway. With minimal setup your AI Agent can notify you on WeChat the moment a job finishes — no more babysitting the screen.
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