From 8cba0544ef4535fb839fbfb49effdef2e45ce186 Mon Sep 17 00:00:00 2001 From: Chris Aniszczyk Date: Wed, 7 Dec 2016 15:18:24 +0100 Subject: [PATCH] Add linkerd proposal https://linkerd.io/ Signed-off-by: Chris Aniszczyk --- proposals/linkerd.adoc | 63 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 proposals/linkerd.adoc diff --git a/proposals/linkerd.adoc b/proposals/linkerd.adoc new file mode 100644 index 0000000..4c12b61 --- /dev/null +++ b/proposals/linkerd.adoc @@ -0,0 +1,63 @@ +== linkerd Proposal + +*Name of project:* linkerd + +*Description:* Linkerd is an open source service mesh for cloud-native applications. It is a layer 5/7 proxy that provides fully decentralized request-level reliability and optimization to service communication, including latency-aware load balancing, retries, failure handling, circuit breaking, and deadlines. It provides granular metrics (both of itself and of downstream services), distributed tracing, TLS, a powerful logical routing layer, and integration with most common service discovery mechanisms. + +Applications use linkerd by proxying HTTP, gRPC, or Thrift calls through a local linkerd instance. In many cases, integration with linkerd is a config change (e.g. setting an http_proxy environment variable) rather than a code change. Linkerd acts as a transparent proxy, and so a call to (e.g. "http://foo/bar") will be routed to the appropriate cluster, resolved in service discovery, load balanced, retried, and returned without application code being aware. + +Linkerd is built on top of Finagle (https://twitter.github.io/finagle/), the high-concurrency RPC library that powers companies like Twitter, Soundcloud, Pinterest, and ING Bank. By staying close to the Finagle codebase, linkerd takes advantage of Finagle's extensive production usage (https://github.com/twitter/finagle/blob/develop/ADOPTERS.md). Linkerd’s primary author is a core contributor to Finagle. + +*Sponsor / Advisor from TOC*: Jonathan Boulle + +*Unique Identifier*: linkerkd + +*License*: Apache License v2.0 + +*Source control repositories*: + +* https://github.com/linkerd + +*Initial Committers (leads)*: + +* Oliver Gould (Buoyant) [@olix0r] +* Alex Leong (Buoyant) [@adleong] + +*Infrastructure requirements*: CI and potentially CNCF Community Cluster access. We run integration tests per commit (e.g. testing Kubernetes API integration) and periodic high-volume stress tests. + +*Issue tracker*: https://github.com/linkerd/issues + +*Mailing lists*: https://groups.google.com/forum/#!forum/linkerd-users + +*Website*: https://linkerd.io/ + +*Community*: Active & growing! + +* Primarily focused on https://slack.linkerd.io (~400 members) +* ~1200 GitHub stars +* ~25 contributors + +*Release methodology and mechanics*: Code review on all changes. Releases triggered manually by developer team. Using pre-1.0 semver semantics. + +*Social media accounts*: Twitter: @linkerd, Slack: http://slack.linkerd.io/ + +*Existing sponsorship*: https://buoyant.io/ + +*External Dependencies*: Runtime: JVM. Build-time: Finagle, netty + +*Statement on alignment with CNCF mission*: + +Linkerd directly addresses the communications challenges of running microservices at scale, and integrates directly with orchestrated environments such as Kubernetes and DC/OS. Linkerd integrates with two existing CNCF projects: it can use the Kubernetes API directly as a service discovery mechanism, and it exposes metrics in Prometheus format. See this blog post (https://blog.buoyant.io/2016/10/04/a-service-mesh-for-kubernetes-part-i-top-line-service-metrics/) for an example of linkerd, Kubernetes and Prometheus working together. + +*Production Usage*: + +* Monzo: used in production; k8s-based infra (https://monzo.com/blog/2016/09/19/building-a-modern-bank-backend/) +* NCBI: used in production w/Consul +* Quid: used in production +* Douban: used in production +* Houghton Mifflin Harcourt: used in production; DC/OS-based infra +* Olark: used in production; k8s-based infra (https://www.youtube.com/watch?v=r0nhQwbe8OY&index=107&list=PLj6h78yzYM2PqgIGU1Qmi8nY7dqn9PCr4) + +*Other Contributors:* + +Currently ~25; >50% non-Buoyant by headcount: https://github.com/BuoyantIO/linkerd/graphs/contributors?type=a