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Diffstat (limited to 'iredis/data/commands/xgroup-setid.md')
| -rw-r--r-- | iredis/data/commands/xgroup-setid.md | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/iredis/data/commands/xgroup-setid.md b/iredis/data/commands/xgroup-setid.md new file mode 100644 index 0000000..0808404 --- /dev/null +++ b/iredis/data/commands/xgroup-setid.md @@ -0,0 +1,16 @@ +Set the **last delivered ID** for a consumer group. + +Normally, a consumer group's last delivered ID is set when the group is created with `XGROUP CREATE`. +The `XGROUP SETID` command allows modifying the group's last delivered ID, without having to delete and recreate the group. +For instance if you want the consumers in a consumer group to re-process all the messages in a stream, you may want to set its next ID to 0: + + XGROUP SETID mystream mygroup 0 + +The optional `entries_read` argument can be specified to enable consumer group lag tracking for an arbitrary ID. +An arbitrary ID is any ID that isn't the ID of the stream's first entry, its last entry or the zero ("0-0") ID. +This can be useful you know exactly how many entries are between the arbitrary ID (excluding it) and the stream's last entry. +In such cases, the `entries_read` can be set to the stream's `entries_added` subtracted with the number of entries. + +@return + +@simple-string-reply: `OK` on success. |