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README: add command to generate key on cli #135

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Feb 17, 2023
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README: add command to generate key on cli #135

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5 changes: 4 additions & 1 deletion README.md
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Expand Up @@ -101,7 +101,10 @@ To cache tokens on Redis you'll need to generate a `cache_encryption_key`. This
```elixir
:crypto.strong_rand_bytes(32) |> Base.encode64()
```

Alternatively you can generate it on command line (Linux/MacOSX) with:
```
dd if=/dev/random bs=1 count=32 | base64
```
> :warning: **The token needs to be 32 bytes long AND base64 encoded**, failing to do so will result in tokens not getting cached on Redis. :warning:

## Usage
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