EngFlow Remote Caching vs Silo
EngFlow Remote Caching
engflow.comSilo
github.comSide by side
| Figure | EngFlow Remote Caching | Silo |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 1 |
| Spec score · Build Cache Software | 7.8 (#12) | 7.3 (#21) |
| Authentication | The pricing comparison lists HTTP basic authentication and mTLS for Free, with GCP IAM, Google OAuth, SAML, and custom options added for Enterprise. | Silo supports HTTP Basic and OIDC/Bearer authentication with read-only and read-write role mapping. |
| Deployment | The pricing page lists Free as self-hosted and Enterprise as self-hosted or managed, with deployment options that include bare metal, AWS, GCP, Kubernetes, and OpenStack for Free, plus Azure, MacStadium, and Orka for Enterprise. | Silo is distributed as a fat JAR and a multi-architecture Docker image for linux/amd64 and linux/arm64. |
| Purpose | Remote Caching is designed to speed builds, reduce developer workload and compute costs, and eliminate redundant rebuilds and test reruns. | Silo is a self-hosted HTTP server that speaks the Gradle build cache protocol and replaces the end-of-life Gradle Remote Build Cache Node. |
| Security | EngFlow says builds run in isolated environments with encryption and, by default, dedicated infrastructure. | The project says it has no phone-home telemetry or accounts and supports atomic writes with crash recovery. |
Plans
In their own words
EngFlow Remote Caching
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.