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nats-server/configuration/securing_nats/jwt/resolver.md
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@ -37,13 +37,13 @@ For more information on how to configure a memory resolver, see [this tutorial](
## NATS Based Resolver
NATS based resolver embed the functionality of the [account server](https://github.com/nats-io/nats-account-server) inside the nats-server.
To not have to store all account jwt on every server, this resolver has two sub types `full` and `cache`.
Their commonalities are that they exchange/lookup account jwt via NATS and the system account and store them in a local (not shared) directory.
The NATS based resolver embeds the functionality of the [account server](https://github.com/nats-io/nats-account-server) inside the nats-server.
In order to avoid having to store all account JWT on every server, this resolver has two sub types `full` and `cache`.
Their commonalities are that they exchange/lookup account JWT via NATS and the system account, and store them in a local (not shared) directory.
### Full
This resolver stores all jwt and exchanges them in an eventually consistent way with other resolver of the same type.
The Full resolver stores all JWTs and exchanges them in an eventually consistent way with other resolvers of the same type.
[`nsc`](../../../../nats-tools/nsc/README.md) supports push/pull/purge with this resolver type.
[JWTs](../../nats-server/configuration/securing_nats/jwt/), uploaded this way, are stored in a directory the server has exclusive access to.
@ -67,17 +67,17 @@ resolver: {
}
```
This resolver type also supports `resolver_preload`. When present, JWTs are listed are stored in the resolver.
This resolver type also supports `resolver_preload`. When present, JWTs are listed and stored in the resolver.
There, they may be subject to updates. Restarts of the `nats-server` will hold on to these more recent versions.
Not every server in a cluster needs to be set to `full`.
You need enough to still serve your workload adequately, while some server are offline.
You need enough to still serve your workload adequately, while some servers are offline.
### Cache
This resolver only stores a subset of [JWT](../../nats-server/configuration/securing_nats/jwt/) and evicts others based on an LRU scheme.
Missing jwt are downloaded from `full` nats based resolver.
This resolver is essentially the URL Resolver in nats.
The Cache resolver only stores a subset of [JWT](../../nats-server/configuration/securing_nats/jwt/) and evicts others based on an LRU scheme.
Missing JWTs are downloaded from `full` nats based resolver.
This resolver is essentially the URL Resolver in NATS.
```yaml
resolver: {
@ -96,7 +96,7 @@ resolver: {
The NATS based resolver utilizes the system account for lookup and upload of account [JWTs](../../nats-server/configuration/securing_nats/jwt/) .
If your application requires tighter integration you can make use of these subjects for tighter integration.
To upload or update any generated account jwt without [`nsc`](../../../../nats-tools/nsc/README.md), send it as request to `$SYS.REQ.CLAIMS.UPDATE`.
Each participating `full` nats based account resolver will respond with a message detailing success or failure.
To upload or update any generated account JWT without [`nsc`](../../../../nats-tools/nsc/README.md), send it as a request to `$SYS.REQ.CLAIMS.UPDATE`.
Each participating `full` NATS based account resolver will respond with a message detailing success or failure.
To serve a requested account [JWT](../../nats-server/configuration/securing_nats/jwt/) yourself and essentially implement an account server, subscribe to `$SYS.REQ.ACCOUNT.*.CLAIMS.LOOKUP` and respond with the account jwt corresponding to the requested account id (wildcard).
To serve a requested account [JWT](../../nats-server/configuration/securing_nats/jwt/) yourself and essentially implement an account server, subscribe to `$SYS.REQ.ACCOUNT.*.CLAIMS.LOOKUP` and respond with the account JWT corresponding to the requested account id (wildcard).