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How Amazon uses chaos engineering to handle 80k requests per second
Discover how Amazon Search combines technology and culture to empower its builder teams, ensuring platform resilience through Chaos Engineering.
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The latest blog posts to take off on Hacker News. 2,560 posts.
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Microsoft finds underwater datacenters are reliable, practical and use energy sustainably
Microsoft retrieved the Northern Isles underwater datacenter from the seafloor off Scotland's Orkney Islands. Project Natick is proving the concept of underwater datacenters is feasible as well as logistically, environmentally and economically practical.
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Mashing Enter to bypass full disk encryption with TPM, Clevis dracut and systemd
This vulnerability allows a physically-present attacker to control the full disk encryption unlock process and gain complete access to decrypted content in some cases where a TPM, dracut and Clevis are used.
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Keeping Figma Fast: perf-testing the WASM editor
When a laptop crashed in an empty office, we knew it was time to overhaul our performance testing framework.
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Elixir saves Pinterest $2M a year in server costs
Companies see huge server savings with Elixir.
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Designing a new concurrent data structure
How to design a lock-free data structure? A detective story for curious developers.
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Slack’s migration to a cellular architecture
Summary In recent years, cellular architectures have become increasingly popular for large online services as a way to increase redundancy and limit the blast radius of site failures. In pursuit of these goals, we have migrated the most critical user-facing services at Slack from a monolithic to a cell-based…
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FreeBSD on Firecracker
A large amount of fantastic open source software originates from “scratching an itch”. Such was the case with Firecracker . In 2014, Amazon launched AWS Lambda as a “serverless” compute platform: Users can provide a function — say, ten lines of Python code — and Lambda provides all of the infrastructure between an…
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GCC always assumes aligned pointer accesses (2020)
Explore the risks associated with unaligned pointer accesses in GCC. Understand how these assumptions can lead to unexpected program behavior and potential security vulnerabilities. Learn best practices to mitigate these risks and write secure code.
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Turmoil, a framework for developing and testing distributed systems
Tokio is a runtime for writing reliable asynchronous applications with Rust. It provides async I/O, networking, scheduling, timers, and more.
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We reduced the cost of building Mastodon at Twitter-scale by 100x
I’m going to cover a lot of ground in this post, so here’s the TLDR: We built a Twitter-scale Mastodon instance from scratch in only 10k lines of code. This is 100x less code than the ~1M lines Twi…
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Continuous batching to increase LLM inference throughput and reduce p50 latency
In this blog, we discuss continuous batching, a critical systems-level optimization that improves both throughput and latency under load for LLMs.
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What is gained and lost with 63-bit integers? (2014)
Almost every programming language uses 64-bit integers on typical modern Intel machines. OCaml uses a special 63-bit representation. How does it affect OCaml?
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Wendelstein 7-X: Gigajoule energy turnover generated for eight minutes
After successful recommissioning in autumn 2022, the Greifswald nuclear fusion experiment has surpassed an important target.
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x86 is dead, long live x86
The last couple of years have been quite revolutionary in the Silicon industry as a whole. With the resurgence of horizo
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Faster filesystem access with Directfs
Directfs is now the default in runsc. This feature gives gVisor’s application kernel (the Sentry) secure direct access to the container filesystem, avoiding expensive round trips to the filesystem gofer. Learn more about this feature in the following blog that was originally posted on Google Open Source Blog .
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SQLite Begin Concurrent
Usually, SQLite allows at most one writer to proceed concurrently. The BEGIN CONCURRENT enhancement allows multiple writers to process write transactions simultanously if the database is in "wal" or "wal2" mode, although the system still serializes COMMIT commands.
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Rethinking Window Management
Window management is one of those areas I'm fascinated with because even after 50 years, nobody's fully cracked it yet. Ever since the dawn of time we've relied on the window metaphor as the primary way of multitasking on the desktop. In this metaphor, each app can spawn one or more rectangular windows, which are...
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Memory Copy Hunting
I have a super power. I want to share it in this blog post so that you, my dear reader, also have it!
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Advanced Performance Extensions (APX)
These extensions expand the x86 instruction set with access to registers and features that improve performance.
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How Turborepo is porting from Go to Rust
Our strategy for making updates and maintaining stability while we migrate languages.
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Remote code execution in OpenSSH’s forwarded SSH-agent
CVE-2023-38408 is a remote code execution flaw in OpenSSH’s forwarded ssh-agent. Get full exploit details, impact analysis, and Qualys detection guidance.
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PostgreSQL: No More Vacuum, No More Bloat
PostgreSQL, a powerful open-source object-relational database system, has been lauded for its robustness, functionality, and flexibility. However, it is not without its challenges – one of which is the notorious VACUUM process. However, the dawn of a new era is upon us with OrioleDB, a novel engine designed for…
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Windows 11 Insider Preview Build 25905 brings a bit of Rust in the kernel
Hello Windows Insiders, today we are releasing Windows 11 Insider Preview Build 25905 to the Canary Channel. We are releasing ISOs for this build – they can be downloaded here. Starting with to
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ScyllaDB is Moving to a New Replication Algorithm: Tablets
How moving from Vnode-based replication to tablets helps dynamically distribute data across the cluster, ultimately increasing ScyllaDB’s elasticity.
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SUSE is forking RHEL
SUSE Preserves Choice in Enterprise Linux by Forking RHEL with a $10+ Million Investment
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We replaced Firecracker with QEMU
Firecracker is not the best choice for all kinds of workloads.
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Wayland on OpenBSD
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