1**This is the documentation for etcd2 releases. Read [etcd3 doc][v3-docs] for etcd3 releases.**
2
3[v3-docs]: ../docs.md#documentation
4
5
6# Production Users
7
8This document tracks people and use cases for etcd in production. By creating a list of production use cases we hope to build a community of advisors that we can reach out to with experience using various etcd applications, operation environments, and cluster sizes. The etcd development team may reach out periodically to check-in on your experience and update this list.
9
10## discovery.etcd.io
11
12- *Application*: https://github.com/coreos/discovery.etcd.io
13- *Launched*: Feb. 2014
14- *Cluster Size*: 5 members, 5 discovery proxies
15- *Order of Data Size*: 100s of Megabytes
16- *Operator*: CoreOS, brandon.philips@coreos.com
17- *Environment*: AWS
18- *Backups*: Periodic async to S3
19
20discovery.etcd.io is the longest continuously running etcd backed service that we know about. It is the basis of automatic cluster bootstrap and was launched in Feb. 2014: https://coreos.com/blog/etcd-0.3.0-released/.
21
22## OpenTable
23
24- *Application*: OpenTable internal service discovery and cluster configuration management
25- *Launched*: May 2014
26- *Cluster Size*: 3 members each in 6 independent clusters; approximately 50 nodes reading / writing
27- *Order of Data Size*: 10s of MB
28- *Operator*: OpenTable, Inc; sschlansker@opentable.com
29- *Environment*: AWS, VMWare
30- *Backups*: None, all data can be re-created if necessary.
31
32## cycoresys.com
33
34- *Application*: multiple
35- *Launched*: Jul. 2014
36- *Cluster Size*: 3 members, _n_ proxies
37- *Order of Data Size*: 100s of kilobytes
38- *Operator*: CyCore Systems, Inc, sys@cycoresys.com
39- *Environment*: Baremetal
40- *Backups*: Periodic sync to Ceph RadosGW and DigitalOcean VM
41
42CyCore Systems provides architecture and engineering for computing systems.  This cluster provides microservices, virtual machines, databases, storage clusters to a number of clients.  It is built on CoreOS machines, with each machine in the cluster running etcd as a peer or proxy.
43
44## Radius Intelligence
45
46- *Application*: multiple internal tools, Kubernetes clusters, bootstrappable system configs
47- *Launched*: June 2015
48- *Cluster Size*: 2 clusters of 5 and 3 members; approximately a dozen nodes read/write
49- *Order of Data Size*: 100s of kilobytes
50- *Operator*: Radius Intelligence; jcderr@radius.com
51- *Environment*: AWS, CoreOS, Kubernetes
52- *Backups*: None, all data can be recreated if necessary.
53
54Radius Intelligence uses Kubernetes running CoreOS to containerize and scale internal toolsets. Examples include running [JetBrains TeamCity][teamcity] and internal AWS security and cost reporting tools. etcd clusters back these clusters as well as provide some basic environment bootstrapping configuration keys.
55
56[teamcity]: https://www.jetbrains.com/teamcity/
57