CODEWITHSUNDEEP
redis
flavian
flavian

Reputation: 28511

Redis: Push multiple items to a List, at a given index

Does Redis support pushing a list to a list at a given index?

The scenario is simple, pagination. But I don't have any guarantee requests will be performed in a predictable order.

I want to do this:

RPUSH("toSomeListKey", list(value1, value2, value3), startIndex))

E.g. push the values at a known index. A work around would be using setting an index and appending after that known value, but I'd like to avoid the overhead.

Upvotes: 1

Views: 2489

Answers (1)

Tw Bert
Tw Bert

Reputation: 3809

I'm afraid a Redis LIST doesn't support this, and/or is a bad fit for your use case.

Both LINDEX and LINSERT are O(N), so you will probably run into performance issues, even if you bundle the commands in a server-side lua script.

I'd consider implementing it as a ZSET.

Upvotes: 2

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