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This command returns information about the stream stored at `<key>`.
The informative details provided by this command are:
* **length**: the number of entries in the stream (see `XLEN`)
* **radix-tree-keys**: the number of keys in the underlying radix data structure
* **radix-tree-nodes**: the number of nodes in the underlying radix data structure
* **groups**: the number of consumer groups defined for the stream
* **last-generated-id**: the ID of the least-recently entry that was added to the stream
* **max-deleted-entry-id**: the maximal entry ID that was deleted from the stream
* **entries-added**: the count of all entries added to the stream during its lifetime
* **first-entry**: the ID and field-value tuples of the first entry in the stream
* **last-entry**: the ID and field-value tuples of the last entry in the stream
The optional `FULL` modifier provides a more verbose reply.
When provided, the `FULL` reply includes an **entries** array that consists of the stream entries (ID and field-value tuples) in ascending order.
Furthermore, **groups** is also an array, and for each of the consumer groups it consists of the information reported by `XINFO GROUPS` and `XINFO CONSUMERS`.
The `COUNT` option can be used to limit the number of stream and PEL entries that are returned (The first `<count>` entries are returned).
The default `COUNT` is 10 and a `COUNT` of 0 means that all entries will be returned (execution time may be long if the stream has a lot of entries).
@return
@array-reply: a list of informational bits
@examples
Default reply:
```
> XINFO STREAM mystream
1) "length"
2) (integer) 2
3) "radix-tree-keys"
4) (integer) 1
5) "radix-tree-nodes"
6) (integer) 2
7) "last-generated-id"
8) "1638125141232-0"
9) "max-deleted-entry-id"
10) "0-0"
11) "entries-added"
12) (integer) 2
13) "groups"
14) (integer) 1
15) "first-entry"
16) 1) "1638125133432-0"
2) 1) "message"
2) "apple"
17) "last-entry"
18) 1) "1638125141232-0"
2) 1) "message"
2) "banana"
```
Full reply:
```
> XADD mystream * foo bar
"1638125133432-0"
> XADD mystream * foo bar2
"1638125141232-0"
> XGROUP CREATE mystream mygroup 0-0
OK
> XREADGROUP GROUP mygroup Alice COUNT 1 STREAMS mystream >
1) 1) "mystream"
2) 1) 1) "1638125133432-0"
2) 1) "foo"
2) "bar"
> XINFO STREAM mystream FULL
1) "length"
2) (integer) 2
3) "radix-tree-keys"
4) (integer) 1
5) "radix-tree-nodes"
6) (integer) 2
7) "last-generated-id"
8) "1638125141232-0"
9) "max-deleted-entry-id"
10) "0-0"
11) "entries-added"
12) (integer) 2
13) "entries"
14) 1) 1) "1638125133432-0"
2) 1) "foo"
2) "bar"
2) 1) "1638125141232-0"
2) 1) "foo"
2) "bar2"
15) "groups"
16) 1) 1) "name"
2) "mygroup"
3) "last-delivered-id"
4) "1638125133432-0"
5) "entries-read"
6) (integer) 1
7) "lag"
8) (integer) 1
9) "pel-count"
10) (integer) 1
11) "pending"
12) 1) 1) "1638125133432-0"
2) "Alice"
3) (integer) 1638125153423
4) (integer) 1
13) "consumers"
14) 1) 1) "name"
2) "Alice"
3) "seen-time"
4) (integer) 1638125153423
5) "pel-count"
6) (integer) 1
7) "pending"
8) 1) 1) "1638125133432-0"
2) (integer) 1638125153423
3) (integer) 1
>
```
|
