How to set a map value about fred.rs HOT 3 CLOSED

Ah I should do a better job documenting this, but RedisMap was built to be a NewType in order to support generic inputs on certain functions. It is designed to be used as an intermediate type so callers can use HashMap or BTreeMap, but it's rare for a caller to need to manually construct a RedisMap by hand.

In your case you can probably collapse that code into this:

let _: () = redis_client.set("foo_key", 123, Some(Expiration::EX(10), None, false).await?;

Or, if you did mean to encode a map into a non-nested type like SET, you would need to serialize it to some format, such as JSON, or something like that. Or, you could use HSET which supports nested maps:

let mut values: HashMap<String, i64> = HashMap::new(); // or BTreeMap, etc
values.insert("foo_key".into(), 123);

let _: () = redis_client.hset("KEYS", values).await?;

A quick note on the NewType values such as RedisMap - they are not as easy to use in the current 4.3.2 version on crates.io as I'd like. I'm a few days away from releasing 5.0.0 which makes some big ergonomics improvements to these types, and these interfaces should be easier to use then.

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I found I can not set Expiration with hset, How to do that as set ?

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The hset command seems what I want, Thanks.

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