EngFlow Remote Caching

EngFlow Remote Caching is shared remote build caching for software teams that want to reduce duplicate builds and test runs. It is most compelling for Bazel teams that can operate a self-hosted service, while larger organizations can buy broader system and deployment support. The free tier has firm capacity and platform limits; Enterprise expands those choices at a custom price.

Overview

EngFlow aims to shorten builds and reduce developer workload and compute costs by reusing build outputs across a team. It uses gRPC, compression, and Build without the Bytes to limit latency and unnecessary transfers. A layered cache is designed to keep frequently used data readily available, reducing repeat requests and network load.

The Build & Test UI reports cache hit rates, build time, and status in real time. That makes it easier to assess whether caching is helping and to spot changes in cache effectiveness. Remote execution is supported, along with C/C++ using GCC, Clang, or MSVC and Java.

Key features

Cache performance and visibility

Compression and reduced data transfers target the network overhead that can blunt the gains from remote caching. The layered architecture is intended to serve frequent requests efficiently, and the UI gives teams useful measures of cache behavior and build progress. These features are relevant for build-heavy projects, though their impact depends on the workload and the cache configuration.

Security and scale

EngFlow says builds run in isolated environments with encryption and dedicated infrastructure by default. It also says its solutions receive regular third-party audits against the five SOC 2 principles. The service is designed to distribute parallel work and cache loads across multiple servers, which gives it a path from small teams to enterprise-scale projects.

Pricing

The Free plan makes the initial cost clear, but its single-machine and 32-core ceiling can constrain larger or concurrent workloads. Enterprise removes those stated capacity limits and adds broader system and infrastructure choices, but the custom quote makes the total cost dependent on the buyer's needs. EngFlow offers a trial request form; no trial duration is stated.

Platforms

EngFlow supports Linux, macOS, and Windows, as well as API, web, and self-hosted access. The Free plan is Linux-only; macOS and Windows are Enterprise options. Teams can deploy Free on bare metal, AWS, GCP, Kubernetes, or OpenStack. Enterprise adds Azure, MacStadium, and Orka among its deployment choices, and can be self-hosted or managed.

Who it's for

This is a strong fit for Bazel teams that want shared caching, build visibility, and a free self-hosted starting point within a defined capacity. Enterprise is aimed at organizations running larger workloads or using Goma or Soong, and at teams that need external S3 or GCS storage, managed deployment, additional authentication methods, or a dedicated engineer. Teams seeking an inexpensive, unrestricted plan or a cache for a build system outside those named should compare other options.

Pros and cons

• Pros: The Free plan includes remote caching for Bazel at no charge, with 1 machine and 32 CPU cores clearly defined.
• Pros: Real-time cache hit, build-time, and status metrics help teams evaluate cache effectiveness.
• Pros: Enterprise offers unlimited machines and cores, external S3 and GCS storage, managed deployment, and support for Goma and Soong.
• Pros: EngFlow says builds are isolated and encrypted, with dedicated infrastructure by default and regular third-party audits against the five SOC 2 principles.
• Cons: Free is limited to Linux, Bazel, one machine, and 32 CPU cores, so teams with other system or platform needs must consider Enterprise.
• Cons: Enterprise requires custom pricing, which leaves the cost uncertain until a quote is obtained.
• Cons: External cache storage and managed deployment are reserved for Enterprise, limiting the Free plan's infrastructure flexibility.

Alternatives

Compare build cache software if you want to weigh EngFlow against a wider set of caching tools.

Choose Bitrise instead if you want a freemium build platform with a free Hobby plan for a one-person team and build credits for a small project a few times per month.

Ccache is a free option for caching single-file compilations; it may suit a narrower compiler workflow, though some compiler flags fall back to normal compilation.

Consider cachepot if an Apache-2.0-licensed open-source option is the priority and you do not need a stated hosted plan.

FosterStack is another freemium self-hosted cache, with a free MIT-licensed server and security patches; its Team plan is $49 a month.

MozJPEG is a free open-source JPEG encoder library, a better fit for JPEG encoding than shared build caching.

Pick NativeLink if you want a free, self-hosted open-source option with a distributed scheduler and remote caching across all build systems and major cloud providers.

bazel-remote is a free Apache-2.0-licensed self-hosted cache whose size can be configured, making it an option for teams that want control over cache sizing.

BuildFetch Cache may suit teams looking for a metered free cache, with 20GB fast storage, 50GB network traffic, 100,000 cache requests, and 45-day LRU retention.

Verdict

Choose EngFlow Remote Caching if your team uses Bazel and wants shared remote caching with live build and cache metrics, or if your organization needs Enterprise capacity, broader build-system support, and deployment options. The free plan is a practical entry point for Linux teams that fit its one-machine, 32-core limit. Look elsewhere if you need a known Enterprise price before engaging, or if your build and storage requirements do not fit EngFlow's plan boundaries.