Capnproto vs flatbuffers benchmark

Benchmarks FlatBuffers is an efficient cross platform serialization library for C, C, C, Go, Java, JavaScript, Lobster, Lua, TypeScript, PHP, Python, and Rust. Is postMessage slow Performance From what weve seen, this kind of Ultra-Fast Serialization is extremely fast; it is pretty much on par with C raw-structure-dump serialization, and is around 510 times faster than FlatBuffers. Cap'n Proto's Java implementation is not allocation free). All three (Cap'n Proto, Flatbuffers, SBE) support schema evolution, and I hadn't really considered repr (C) structs because SBE is already incredibly similar. Cap'n proto is amazing, but sadly does not get nearly the support that protobufgrpc does. In protobuf, the allocationdeallocation of Testmessage and its sub messages is a large part of the cost, and in your benchmark code the allocation is done only on the first iteration, and then reused on all other iteration, essentially erasing that cost. Same for deallocation. That apples to oranges since the other other two do not allocate such objects.