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In this presentation I will give you an idea of what Redis is, what it does, and why you might want to use it. Redis is an in-memory data structure store, supports strings, hashes, lists, sets, sorted sets. With a small set of API functions, is easy to learn. It can be used for a wide range of problems, not only for caching. Let start exploring a simple real use case: how the Joomla cache take advantages from Redis. Can be done more, some other use cases: sessions and statistics.
JSON is one of the most widely used data-interchange format in web, can be used with most of the modern programming languages, and is supported by most of the web APIs. As JSON adoption has grown, even traditional relational databases are integrating JSON features. Let's start exploring how to work with the new JSON datstype natively available in mysql and postgresql, and considering when can be useful to have an hybrid data model instead of a pure relational or pure NoSQL