February 2018
Intermediate to advanced
382 pages
11h 33m
English
Content preview from Redis 4.x Cookbook
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Latest N records
Suppose we would like to get the ten restaurants that have been most recently added to our application. If using a RDBMS, we would have to run a SQL query, such as the following:
SELECT * FROM restaurants ORDER BY created_at DESC LIMIT 10
We can take advantage of a Redis list to solve this problem:
- Maintain a Redis list, latest_restaurants.
- Whenever a new restaurant is added, do LPUSH latest_restaurants and LTRIM recent_restaurants 0 10. In this way, the Redis list will always contain the latest ten restaurants.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.