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Revise "Authenticate using AUTH #ws7" #464

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Nov 9, 2025
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Revise "Authenticate using AUTH #ws7" #464

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20 changes: 11 additions & 9 deletions stage_descriptions/auth-08-ws7.md
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Original file line number Diff line number Diff line change
@@ -1,8 +1,10 @@
In this stage, you'll implement enforcing authentication using the `AUTH` command.

### Enforcing authentication using `AUTH`
### Enforcing Authentication using `AUTH`

After the `AUTH` command returns success, the connection is authenticated as the specified user. For example,
After the `AUTH` command succeeds, the connection becomes authenticated as the specified user. Once authenticated, the connection can execute commands that previously returned `NOAUTH` errors:

For example:

```bash
# Client 1
Expand All @@ -18,14 +20,16 @@ $ redis-cli
> ACL WHOAMI
(error) NOAUTH Authentication required.

> AUTH default mypassword
> AUTH default newpassword
OK

# Client 2 is now authenticated as the 'default' user
> ACL WHOAMI
"default"
```

The authentication lasts for the entire connection, so the client does not need to re-authenticate for every command.

### Tests

The tester will execute your program like this:
Expand All @@ -34,7 +38,7 @@ The tester will execute your program like this:
$ ./your_program.sh
```

It'll then send commands to two different clients.
It will then send commands to two different clients:

```bash
# Client 1
Expand Down Expand Up @@ -62,10 +66,8 @@ OK
"default"
```

The tester will validate the following:
The tester will verify that:

1. A new client receives a `NOAUTH` error when attempting to execute commands before authenticating.

2. The `AUTH` command returns `OK` upon successful authentication.

3. The client can execute `ACL WHOAMI` successfully after authentication.
2. The `AUTH` command returns `OK` as a simple string on successful authentication.
3. The client can execute `ACL WHOAMI` successfully after authentication.
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