Ccache vs EngFlow Remote Caching

Ccache is a build tool that can reduce repeated compilation work by storing prior results and recognizing when a single-file compilation recurs. It supports compilers such as GCC, Clang and MSVC, and languages including C, C++, assembler, CUDA, Objective-C and Objective-C++, with support varying by compiler and language. Runtime support includes Linux, macOS and native Windows at support level A, and Windows with MSYS2 and other Unix-like platforms at level B. Direct and depend modes can avoid running the preprocessor. Remote caching is possible through adaptable storage backends, with listed helpers for HTTP, HTTPS and Redis protocols. Ccache records cache hit and miss statistics, manages cache size, supports Zstandard compression, and uses BLAKE3 and XXH3 in its hashing and corruption checks. It works with Make, CMake, Ninja and Visual Studio. It is free software under the GNU GPL version 3 or later. Its scope has limits: multi-file compilation, linking and compilations with unsupported flags fall back to the real compiler. The project also cautions that cache misses add overhead and recommends measuring typical workloads.

EngFlow Remote Caching is a remote cache service for reducing repeated builds and test reruns, developer workload, and compute costs. It uses gRPC, cache compression, and Build without the Bytes to limit latency and unnecessary data transfers. A layered cache keeps frequently requested data available, while the Build & Test UI reports cache hit rates, build time, and status in real time. The Free tier supports Bazel and provides in-cluster caching on one machine with 32 CPU cores, running Linux. Enterprise supports Bazel, Goma for Chromium, and Soong for AOSP, as well as in-cluster or external storage such as S3 and GCS. Free is self-hosted; Enterprise can be self-hosted or managed. The service is available for Linux, macOS, Windows, web, and API use. EngFlow says builds run in isolated, encrypted environments with dedicated infrastructure by default, and its solutions receive regular third-party audits against the five SOC 2 principles. Free costs nothing; Enterprise pricing is custom quote. A trial request form is available, with no duration stated.