mirror of https://github.com/docker/cli.git
63 lines
2.5 KiB
Markdown
63 lines
2.5 KiB
Markdown
# ttrpc
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[](https://travis-ci.org/containerd/ttrpc)
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GRPC for low-memory environments.
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The existing grpc-go project requires a lot of memory overhead for importing
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packages and at runtime. While this is great for many services with low density
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requirements, this can be a problem when running a large number of services on
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a single machine or on a machine with a small amount of memory.
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Using the same GRPC definitions, this project reduces the binary size and
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protocol overhead required. We do this by eliding the `net/http`, `net/http2`
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and `grpc` package used by grpc replacing it with a lightweight framing
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protocol. The result are smaller binaries that use less resident memory with
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the same ease of use as GRPC.
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Please note that while this project supports generating either end of the
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protocol, the generated service definitions will be incompatible with regular
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GRPC services, as they do not speak the same protocol.
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# Usage
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Create a gogo vanity binary (see
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[`cmd/protoc-gen-gogottrpc/main.go`](cmd/protoc-gen-gogottrpc/main.go) for an
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example with the ttrpc plugin enabled.
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It's recommended to use [`protobuild`](https://github.com//stevvooe/protobuild)
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to build the protobufs for this project, but this will work with protoc
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directly, if required.
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# Differences from GRPC
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- The protocol stack has been replaced with a lighter protocol that doesn't
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require http, http2 and tls.
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- The client and server interface are identical whereas in GRPC there is a
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client and server interface that are different.
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- The Go stdlib context package is used instead.
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- No support for streams yet.
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# Status
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Very new. YMMV.
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TODO:
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- [X] Plumb error codes and GRPC status
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- [X] Remove use of any type and dependency on typeurl package
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- [X] Ensure that protocol can support streaming in the future
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- [ ] Document protocol layout
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- [ ] Add testing under concurrent load to ensure
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- [ ] Verify connection error handling
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# Project details
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ttrpc is a containerd sub-project, licensed under the [Apache 2.0 license](./LICENSE).
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As a containerd sub-project, you will find the:
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* [Project governance](https://github.com/containerd/project/blob/master/GOVERNANCE.md),
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* [Maintainers](https://github.com/containerd/project/blob/master/MAINTAINERS),
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* and [Contributing guidelines](https://github.com/containerd/project/blob/master/CONTRIBUTING.md)
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information in our [`containerd/project`](https://github.com/containerd/project) repository.
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