Storing hundreds of millions of simple key-value pairs in Redis
Storing hundreds of millions of simple key-value pairs in Redis When transitioning systems, sometimes you have to build a little scaffolding. At Instagram, we recently had to do just that: for legacy reasons, we need to keep around a mapping of about 300 million photos back to the user ID that created them, in order to know which shard to query (see more info about our sharding setup). While event
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Recreating The Raised Center Tab Bar Button of Instagram, DailyBooth & Pathâ„¢
Full Source code: https://github.com/boctor/idev-recipes/tree/master/RaisedCenterTabBar Problem: Apps like Instagram, DailyBooth and Path™ have what looks like a standard UITabBarController, but the center tab bar is raised or colored. How do we recreate this look? Solution: These tab bars look pretty standard with the exception of the center item, so we’ll start out with a standard UITabBarContro
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redis-faina: a query analysis tool for Redis
Welcome to the Instagram Engineering Blog, where we share insights on building and scaling our service. As we mentioned in our previous blog, we’re big fans of tools and techniques for introspecting our live traffic to see what exactly is going on. One tool we use frequently is PGFouine, a query traffic analyzer for PostgreSQL. We recently found that we also needed a similar tool for Redis, our sw
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