Question 1

How does BuffStreams compare to gRPC in Go?

Accepted Answer

BuffStreams is a lightweight library for custom TCP streaming with Protocol Buffers, focusing on raw performance and minimal overhead, while gRPC is a full RPC framework with HTTP/2, service definitions, and built-in features like authentication. Use BuffStreams for high-throughput, low-latency TCP services; choose gRPC for standardized, feature-rich RPC with broader ecosystem support.

Question 2

How to handle large messages with BuffStreams?

Accepted Answer

Set the MaxMessageSize in both TCPListenerConfig and TCPConnConfig to match between client and server. The library uses fixed headers to delimit messages, so ensure the size accommodates your payloads to avoid truncation or errors.

Question 3

Is BuffStreams thread-safe for concurrent writes?

Accepted Answer

Yes, the Manager abstraction is thread-safe with internal locks, allowing safe concurrent writes to cached connections. However, direct use of TCPConn structs requires manual synchronization if accessed from multiple goroutines.

Question 4

Can I use BuffStreams with JSON instead of Protocol Buffers?

Accepted Answer

Yes, BuffStreams is protocol agnostic and can stream any data with the header+payload format. You'll need to serialize JSON to bytes before writing and deserialize in the callback, as the library only handles raw byte arrays.

Question 5

How to implement error handling in BuffStreams callbacks?

Accepted Answer

The ListenCallback returns an error, which you can handle within the function for deserialization or logic failures. For write errors, check the bytesWritten and err returned by Write calls, as connections are closed and reopened on failures with no guarantee on partial writes.

Question 6

What are the real-world performance benchmarks for BuffStreams?

Accepted Answer

The README cites over 1.1 million messages per second with 110-byte messages on a single socket, but more comprehensive real-world benchmarks are listed on the roadmap. Refer to the BENCH.md file for detailed metrics under controlled conditions.

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