mirror of
https://github.com/facebook/sapling.git
synced 2024-10-11 09:17:30 +03:00
A Scalable, User-Friendly Source Control System.
65ea22225b
Summary: `Durable` nodes are inner nodes that come from storage. Their contents can be shared between multiple instances of Tree. They are lazily evaluated. Their children list will be read from storage only when it is accessed. The inner structure of a durable link poses an interesting question related to handling failures: what do we do when we have a failure when reading from storage? We can cache the failure or we don't cache it. Caching it is mostly fine if we had an error reading from local storage or when deserializing. It is not the best option if our storage is remote and we hit a network blip. On the other hand we would not want to always retry when there is a failure on remote storage, we'd want to have a least an exponential backoff on retries. Long story short is that caching the failure is a reasonable place to start from. The lazy-init crate is useful for modeling the lazy initialization model that we have for durable node links. See docs at https://docs.rs/lazy-init/0.3.0/lazy_init/ Reviewed By: quark-zju Differential Revision: D14142928 fbshipit-source-id: 077f708b38e2ace772f30b3392445326ce17f47c |
||
|---|---|---|
| contrib | ||
| distutils_rust | ||
| doc | ||
| edenscm | ||
| exec | ||
| i18n | ||
| lib | ||
| newdoc | ||
| slides | ||
| tests | ||
| .editorconfig | ||
| .flake8 | ||
| .gitignore | ||
| .hgsigs | ||
| .jshintrc | ||
| CONTRIBUTING | ||
| CONTRIBUTORS | ||
| COPYING | ||
| gen_version.py | ||
| hg | ||
| hgeditor | ||
| hgweb.cgi | ||
| Makefile | ||
| README.rst | ||
| setup.py | ||
Mercurial ========= Mercurial is a fast, easy to use, distributed revision control tool for software developers. Basic install:: $ make # see install targets $ make install # do a system-wide install $ hg debuginstall # sanity-check setup $ hg # see help Running without installing:: $ make local # build for inplace usage $ ./hg --version # should show the latest version See https://mercurial-scm.org/ for detailed installation instructions, platform-specific notes, and Mercurial user information.