Viacheslav Biriukov

Linux System Engineer 💻 ex-Cloudflare, ex-Apple, ex-Facebook. Distributed systems and networks. Golang, Rust, Zig, eBPF, C.

[Viacheslav Biriukov @brk0v]

🦀Introducing tokio-netem – network emulation building blocks for Async Rust.

Most tests assume a perfect network. Production… doesn’t.

Wrap any AsyncRead/AsyncWrite to simulate latency, jitter, bandwidth caps, loss, reordering, corruption, abrupt closes, and more. Examples:

[Viacheslav Biriukov @brk0v]

🦀 Rust: Checking correctness of asynchronous code with Shuttle

Sarek Skotåm shows how Shuttle tests concurrent by controlling the scheduler: finding races, deadlocks, future locks, cancellation-safety bugs that normal tests may never hit

https://t.co/V75Yz6atkU
#rust #rustlog

[Viacheslav Biriukov @brk0v]

🦀 Rust: Zero-copy and production investigation

Great TokioConf talk on what happens when a Rust/Tokio system goes from 10M to 45M req/s and every comfortable assumption breaks.
Takeaway: profile first, question every abstraction.

https://t.co/e30P8fjlr1
#rust #rustlang

[Viacheslav Biriukov @brk0v]

🐹 Go: from code to a binary

A great deep dive into what actually happens after go build.

Explains why Go sometimes allocates, inlines, or removes bounds checks.

https://t.co/Modg7VgfHB
#go #golang

[Viacheslav Biriukov @brk0v]

⚙️ epoll vs io_uring vs sync I/O

Great walkthrough of serving files over HTTP in C three ways:

1. thread-per-request sync I/O
2. epoll event loop –
3. io_uring completions

https://t.co/E37uZUkyTj

[Viacheslav Biriukov @brk0v]

🦀 Rust: Patterns & Engineering How-Tos

A practical guide from Microsoft on the patterns you actually need in production:

• type-state & newtypes
• PhantomData
• channels & concurrency
• async pitfalls
• testing with proptest

https://t.co/bK3mqnxL1I
#rust #rustlang

[Viacheslav Biriukov @brk0v]

⚡️ Zig: 2026 and No-AI policy

If you haven't watched this video yet, Andrew Kelley explains why Zig exists,why 1.0 shouldn’t be rushed, why the foundation stays lean and independent, and why Zig has a strict no-AI policy for contributions

https://t.co/gZMovPr24W
#zig #ziglang

[Viacheslav Biriukov @brk0v]

🦀 Rust: Async ORM from the Tokio ecosystem.

Toasty focuses on ease of use while still exposing database-specific capabilities instead of hiding them behind a leaky abstraction.

Supports SQLite, Postgres, MySQL, and DynamoDB.

https://t.co/mz77uCOSi6
#rust #rustlang

[Viacheslav Biriukov @brk0v]

🦀 Rust: building a production-grade Multi-Paxos engine with AI.

100K+ lines of Rust approach:

• contracts written with AI
• tests generated from contracts
• property-based testing for invariants
• lightweight specs per user story

https://t.co/vCYB7swSHj
#rust #rustlang

[Viacheslav Biriukov @brk0v]

🦀 Rust Big News: tonic is joining the official gRPC project

hyperium/tonic becomes grpc/grpc-rust

• stronger long-term maintenance
• Google/LinkedIn/Datadog involved
• xDS support via tonic-xds
• better path for production Rust gRPC

https://t.co/4w6vdn5k8k
#rust #rustlang

[Viacheslav Biriukov @brk0v]

🐹 Go: How select works under the hood

Great deep dive into one of the most interesting parts of Go concurrency.

select has a runtime and compiler parts. It rewrites simple cases away, and only the general case goes through runtime.selectgo.

https://t.co/CdG8z0HXL0
#go #golang

[Viacheslav Biriukov @brk0v]

🐹 Go: Testing concurrent code with synctest

Great FOSDEM talk about deterministic testing for highly concurrent systems:

• track goroutines
• catch deadlocks
• wait for durable blocking
• use fake time

https://t.co/RrGwP2ohvL
#go #golang

[Viacheslav Biriukov @brk0v]

🦀 Rust: Cow and performance

A JSON formatter became 42% faster by removing Cow<str> where its flexibility was never used, shrinking token/state-machine overhead, and making the CPU do less useless work.

https://t.co/wBtHMB4ncf
#rust #rustlang

[Viacheslav Biriukov @brk0v]

⚡ Zig: Async I/O with std IO today.

Zig 0.16 introduced a standard I/O abstraction, but the built-in usable runtime is still thread-based.

Lukáš shows how zio uses the same API and gives real async I/O with io_uring/epoll/kqueue/IOCP.

https://t.co/8uJn8exnVW
#zig #ziglang

[Viacheslav Biriukov @brk0v]

🐹 Go: Supply chain attacks are becoming more frequent, and CI/CD is now part of your production security boundary.

Practical write-up from Cilium:
• Pinned actions
• Vendor
• Trusted vs untrusted workflow paths
• Blast-radius reduction

https://t.co/lsZuvQiQdX
#go #golang

[Viacheslav Biriukov @brk0v]

🐹 Go: Struct tags – how to use them in your code

Have you ever wondered how struct tags are actually parsed?

Great guide by Redowan Nafi on what’s behind: reflect, tag parsing, and practical examples you can use right away

https://t.co/bVSe33RQVD
#golang #go

[Viacheslav Biriukov @brk0v]

🦀 Rust: Actor model + Async tasks

Actor model with Async Rust is a great pattern for building easy-to-support applications

But one of the trade-offs is the additional cost of channel communication.

https://t.co/eHqUeivdsc
#rust #rustlang

[Viacheslav Biriukov @brk0v]

🦀 Bun’s “Rewrite in Rust” PR is merged.

No matter where this goes – the full rewrite, experiment, or something in between, it’s new, uncharted territory for Rust and Zig ecosystems.

https://t.co/tktG6tqV2j

#rust #rustlang #zig #ziglang