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Postgres transactions are a distributed systems superpower
Keeping workflow state and application data in the same Postgres database lets one transaction update both, simplifying idempotency and atomicity.
New
The latest blog posts to take off on Hacker News. 2,560 posts.
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Qualcomm Linux 2.0
Unified code base. Upstream first. No fork. SoC agnostic. Learn how you can build with Qualcomm Linux 2.0
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Postgres data stored in Parquet on S3: LTAP architecture explained
Almost every traditional database keeps its write-ahead log and data files on one machine's disk, which is the root cause of data loss risk, expensive read replicas and high-availability clones, and analytics queries that drag down transactions.
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Asahi Linux 7.1 Progress Report
Porting Linux to Apple Silicon
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Memory Safe Context Switching
This document describes how Fil-C supports longjmp , setjmp , setcontext , getcontext , makecontext , and swapcontext in a totally memory-safe way. In particular, no misuse of those APIs in Fil-C can lead to stack corruption or any other violation of Fil-C's capability model.
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DLL that was not present in memory despite not being formally unloaded
Figuring out how it went missing.
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NUMA: Cores, memory, and the distance between them
Why two identical VMs on the same host can perform 20% differently — and what NUMA topology in Xen-based virtualization actually costs you.
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MicroVMs: Run isolated sandboxes with full lifecycle control
AWS launches a new serverless compute primitive, AWS Lambda MicroVMs. VM-level, isolated sandboxes with no shared kernel or resources between sessions. Rapid launch and resume, full lifecycle control, state preservation up to 8 hours, no infrastructure to manage.
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Memory Safe Inline Assembly
Since Fil-C 0.685, memory-safe inline assembly is supported on both X86_64 and ARM64.
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Making ast.walk 220x Faster
Why ast.walk when you can ast.sprint? How we made Python AST traversal 220x faster while building a custom linter for Reflex's AI code generation.
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DuckDB Internals Part 1
Walk through DuckDB's internals: how it skips serialization overhead, parses and optimizes SQL, and stores data in columnar row groups with zone maps.
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The time the x86 emulator team found code so bad they fixed it during emulation
Offensive content in the eyes of a software engineer.
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To study how chips work, MIT researchers built their own operating system
The new "Fractal" operating system kernel, developed at MIT, gives researchers a clearer look at how computer chips work internally. It was used to study the branch predictors inside Apple's M1 processor, where it revealed a potential vulnerability to major speculative attacks.
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21 years and counting of 'eight fallacies of distributed computing' (2025)
Eight long held and common beliefs about the network have been shown, time after time, to be false. What are they, and what do they mean?
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Looking Forward to Postgres 19: It's About Time
Postgres 19 brings native temporal table support. Shaun Thomas covers WITHOUT OVERLAPS, FOR PORTION OF, and temporal foreign keys - and what's still missing.
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WASI 0.3
WASI 0.3 is official, and async is now native to WebAssembly Components. The WASI Subgroup voted to ratify WASI 0.3.0, rebasing WASI onto the WebAssembly Component Model’s async primitives. The 0.3.0 specification is now stable, and runt...
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The Road to the WASM Component Model 1.0
WASI P3 is almost here, bringing native async support to the WebAssembly System Interface (WASI) and Component Model. In this post, we’re looking to the next big milestone: a stable, formally specified Component Model 1.0.At February’s B...
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Looking Forward to Postgres 19: Query Hints
Postgres 19 brings plan advice: the query hints the Postgres community held off on for 15 years. Shaun Thomas covers the 15-year debate, pg_plan_advice, pg_stash_advice, and how to use them.
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Roku LT Operating System open source distribution
Roku provides the simplest way to stream entertainment to your TV. On your terms. With thousands of available channels to choose from.
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Real-time LLM Inference on Standard GPUs: 3k tokens/s per request
Today, Kog AI launches a tech preview of the Kog Inference Engine (KIE): 3,000 output tokens/s per request on 8× AMD MI300X GPUs and 2,100 on 8× NVIDIA H200 (FP16, no speculative decoding). This preview runs a 2B model, with support for large third-party MoE models coming next at similar speeds.
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Building durable workflows on Postgres
Explaining the concept of a Postgres-backed durable execution system like DBOS and comparing it to external workflow orchestration systems like Temporal.
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Copy Fail, Dirty Frag, and Fragnesia kernel vulnerabilities
News and information from Gentoo Linux
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The Fil-C Optimized Calling Convention
Fil-C achieves memory safety even for programs that behave adversarially. That includes casting function pointers to the wrong signature and then calling them, exporting a function with one signature in one module and then importing it with a different signature in another, or even exporting a symbol as a function in…
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First public macOS kernel memory corruption exploit on Apple M5
Apple spent five years building hardware and software to make memory corruption exploits dramatically harder. Our engineers, working together with Mythos Preview, built a working exploit in five days.
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When “idle” isn't idle: how a Linux kernel optimization became a QUIC bug
We investigated a bug where CUBIC's congestion window became pinned at its minimum floor, causing a performance to plummet. The fix involved correctly measuring idle periods to distinguish RTT wait times from actual application idleness.
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Can LLMs model real-world systems in TLA+?
Editors’ note: AI has been actively pushing the frontier of applied formal methods for computing systems. In this article, the Specula team wrote about their experience of evaluating LLMs on modeling system code, the basic capability for agentic model checking, using TLA+, a specification language f
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Lakebase architecture delivers faster Postgres writes
How Lakebase's storage architecture pushes down full page write generation to cut WAL traffic by 94% and boost Postgres write throughput by up to 5x.