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Topic Link: Uva:http://uva.onlinejudge.org/index.php?option=com_onlinejudge&itemid=8&category=24&page=show_ problem&problem=1066 poj:http://poj.org/problem?id=2549 Type: hash, two-point lookup Original title: Given S, a set of integers, find

Redis is a key-value storage system. Similar to memcached, it solves the situation where data is completely lost after a power outage, and she supports more untyped value types, and supports lists (list), sets (set), and Zsets (ordered sets) of data

Background When it comes to distributed caching, the first thing you think about is memcached. Indeed, Memcached is one of the most popular options at the moment. But many internet companies don't have to memcached, like new eggs. Why not choose

In Oracle databases, consistent gets is useful for judging the performance of a section of SQL, and generally comparing the performance of two segments of SQL is not to see whose execution time is short, but to see whose consistent gets small. But