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28 lines
993 B
Markdown
28 lines
993 B
Markdown
# Getting Started
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Getting started with JetStream is straightforward. While we speak of JetStream as if it is a separate component, it's actually a subsystem built into the NATS server that needs to be enabled.
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## Command Line
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Enable JetStream by specifying the `-js` flag when starting the NATS server.
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`$ nats-server -js`
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## Configuration File
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You can also enable JetStream through a configuration file. By default, the JetStream subsytem will store data in the /tmp directory. Here's a minimal file that will store data in a local "nats" directory, suitable for development and local testing.
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`$ nats-server -c js.conf`
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```text
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# js.conf
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jetstream {
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store_dir=nats
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}
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```
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Normally JetStream will be run in clustered mode and will replicate data, so the best place to store JetStream data would be locally on a fast SSD. One should specifically avoid NAS or NFS storage for JetStream.
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See [Using Docker](using_docker.md) and [Using Source](using_source.md) for more information.
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