Posts tagged "performance"

Calling an async method through dyn Trait needs a boxed future. I measured what that box costs per call, with an allocation counter and a million calls, and where it actually matters.

Rust async functions store every value needed after an await. Learn to measure future size, identify saved fields, and reduce it without boxing everything.

Offset pagination is easy to write and breaks in two ways: it gets slow, and it skips or repeats rows when the data changes. Cursor pagination fixes both. Here is the difference.

"Kafka is fast" is correct but too abstract. Here is the concrete version: four cheap operations that explain why Kafka handles millions of messages without breaking a sweat.

Most comparisons of gRPC streaming vs unary stop at the API surface. This one goes to the wire — HTTP/2 frames, protobuf framing, peak memory, and latency to first byte.