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README.md
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README.md
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# etcd
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# etcd
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A highly-available key value store for shared configuration and service discovery. etcd is inspired by zookeeper and doozer, with a focus on:
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* Simple: curl'able user facing API (HTTP+JSON)
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* Secure: optional SSL client cert authentication
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* Fast: benchmarked 1000s of writes/s per instance
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* Reliable: Properly distributed using Raft
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Etcd is written in go and uses the [raft][raft] paxos implementation for high availability.
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See [go-etcd][go-etcd] for a native go client. Or feel free to just use curl, as in the examples below.
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[raft]: https://github.com/coreos/go-raft
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[go-etcd]: https://github.com/coreos/go-etcd
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## Getting Started
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## Getting Started
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### Building
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### Building
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{"action":"DELETE","key":"/message","prevValue":"Hello etcd","index":5}
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{"action":"DELETE","key":"/message","prevValue":"Hello etcd","index":5}
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```
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```
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#### Using time to live key
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#### Using a TTL on a key
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Keys in etcd can be set to expire after a specified number of seconds. That is done by setting a TTL (time to live) on the key when you POST:
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Keys in etcd can be set to expire after a specified number of seconds. That is done by setting a TTL (time to live) on the key when you POST:
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curl http://127.0.0.1:4001/v1/keys/foo
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curl http://127.0.0.1:4001/v1/keys/foo
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```
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```
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If the TTL has passed then you will
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If the TTL has expired, the key will be deleted, and you will be returned a 404.
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```html
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```html
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404 page not found
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404 page not found
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