The previous article on Bazel remote caching concluded that using just a remote cache for Bazel builds was suboptimal due to limitations in what can and cannot be cached for security reasons. The reason behind the restrictions was that it is impossible to safely reuse a cache across users. Or is it? In this article, we’ll see how leveraging remote execution in conjunction with a remote cache opens the door to safely sharing the cache across users. The reason is that remote execution provides a trusted execution environment for actions, and this opens the door to cross-user result sharing. Let’s see why and how.