Concurrency
Data Parallelism in Rust With Rayon and Parallel Iterators
Swap iter for par_iter and Rayon splits the work across a thread pool. See the speedup conditions, the traits it needs and when it makes things slower.
8 min read
Topic
Concurrency
Threads, channels, locks, atomics and Tokio, with a bias towards the bug you will hit at 3am.
Architecture
Background Job Queues in Rust Compared by Trade Off
Pick a background job system for a Rust service: an in-process Tokio channel, a database table with SKIP LOCKED, Redis queues, or a broker. Compare durability, retries, scale and operational cost.
3 min read
DevOpsGuide
Deploying Rust to AWS Lambda With Cargo Lambda Tooling
Build and deploy a Rust function to AWS Lambda with cargo-lambda: project template, lambda_runtime handler, ARM builds, deploy, invoke locally, cold starts and limits.
15 min read
Concurrency
Arc Mutex in Rust and the Pattern Behind Shared State
Arc gives several threads shared ownership and Mutex gives them one-at-a-time access. See the full pattern, the deadlock to avoid and what poisoning means.
9 min read
Generics
Send and Sync in Rust Explained and Why They Are Auto Traits
Send means a value can move to another thread and Sync means a reference to it can be shared. See which types lack them and why the compiler decides for you.
9 min read
Concurrency
Message Passing in Rust With std mpsc Channels Step by Step
std::sync::mpsc moves values between threads through a channel. Learn send, recv, iterating, multiple producers and what a closed channel means.
8 min read
Tooling
Debugging Deadlocks in Rust With Thread Dumps and Traces
A Rust program that hangs is often a deadlock. Capture every thread's stack with gdb, parking_lot deadlock detection or tokio-console, and read who waits for what.
3 min read
Concurrency
Spawning Threads in Rust With std thread and Joining Them
Start OS threads with std::thread::spawn, move data in with move closures, collect results with join and borrow safely with scoped threads.
8 min read
Web
Axum Graceful Shutdown and Draining Connections Step by Step
Handle SIGTERM and Ctrl C so Axum finishes in-flight requests before exiting. Includes the signal future, the drain timeout and the Kubernetes and systemd details.
3 min read
Concurrency
Rust Error Future Cannot Be Sent Between Threads Safely
Tokio spawn needs a Send future. When the compiler says the future cannot be sent between threads safely, it points at the value held across an await.
8 min read
Databases
Rust and PostgreSQL Listen Notify for Lightweight Events
Use PostgreSQL LISTEN and NOTIFY from Rust with SQLx PgListener: send notifications from SQL or triggers, receive them in a task, handle reconnects and know the limits.
3 min read
Concurrency
Holding a Mutex Guard Across an Await in Rust and the Fix
A MutexGuard held across an await can make a task non-Send or deadlock a worker. See the compiler error, the deadlock it allows and three fixes.
8 min read
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