Something like a tag cache and querying it for suggesting them using Redis

Question

It would be like StackOverflow: when you ask a question you need to provide some tags.

Currently I\'m querying the relational database store, but I believe that Redis

Answer 1

After googling a lot, I found a good post about something that fits what I was asking for here at StackOverflow:

• http://robots.thoughtbot.com/post/48851498400/redis-partial-word-match-you-auto-complete-me

Summary...:

1. Create key-values for tags

sadd mysite:tags "stackoverflow" "stack-exchange" "question" "about-redis"

2. Create an index for each possible combination

Yes, for example:

• "s"
• "st"
• "sta"

• ... and so on

  sadd mysite:tags:index:s 1 2

  sadd mysite:tags:index:st 1 2

  sadd mysite:tags:index:sta 1 2

  sadd mysite:tags:index:stack 1 2

  sadd mysite:tags:index:stacko 1

... and so on.

It's about adding all tags that start with s, st...

3. Using SORT to get tags suggestions:

sort mysite:tags:index:s by nosort get tags:*

This will output:

• stackoverflow
• stack-exchange

Or... sort mysite:tags:index:stack- by nosort get tags:*

...will output:

• stack-exchange

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It seems to be a good solution!