VictoriaMetrics Observability Blog

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Filter: Go

  • gRPC in Go: Streaming RPCs, Interceptors, and Metadata

    Go’s gRPC implementation uses code generation to create type-safe client and server interfaces. Streaming RPCs allow sending multiple messages over a single connection, perfect for real-time updates and continuous data flows. Interceptors provide middleware-like functionality for authentication, logging, and error handling without modifying your core service logic.

  • Practical Protobuf - From Basic to Best Practices

    Different Protobuf types dramatically impact your binary size—sint32 encoding needs just 1 byte for negative numbers while int32 wastes 10 bytes, repeated fields can balloon with large tag numbers, and poor type choices can triple your network traffic. Learn the exact patterns to optimize your Protobuf messages for production.

  • How HTTP/2 Works and How to Enable It in Go

    HTTP/2 solves head-of-line blocking at the application layer by multiplexing multiple streams over a single TCP connection. While HTTP/1.1 requires requests to be processed sequentially, HTTP/2 allows parallel processing through independent streams, each with its own ID. The Go standard library supports HTTP/2 out of the box when using HTTPS, and with some configuration, it can work over plain HTTP too

  • From net/rpc to gRPC in Go Applications

    The net/rpc package in Go demonstrates basic RPC concepts by establishing TCP connections between clients and servers, using sequence numbers to match requests with responses, and supporting both gob (Go-specific) and JSON codecs for data serialization. While net/rpc is simpler and limited to Go services by default, gRPC offers advanced features like HTTP/2 streaming, cross-language support, and better performance

  • Weak Pointers in Go: Why They Matter Now

    Through the weak package, you can create these special pointers that automatically become nil when their target memory gets collected. While they’re a bit trickier to use than regular pointers, they’re super useful for things like canonicalization maps and memory-efficient caching. The implementation is pretty clever too, using an 8-byte indirection object to make garbage collection more efficient.

  • Go Runtime Finalizer and Keep Alive

    Go’s runtime package provides two intriguing features: Finalizers and KeepAlive, which help manage object lifecycle in unique ways. Finalizers let you attach cleanup functions to objects that run when they’re garbage collected. Meanwhile, KeepAlive serves as a tool to prevent premature object collection, especially when dealing with resources that need to stay alive longer than the compiler might expect.