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Nobody uses Redis like a database and expects persistence of data. Redis is usually used in the context of a message queue. Lucene isn't a database, it's a ful
by camus2 9y ago
Nobody uses Redis like a database and expects persistence of data. Redis is usually used in the context of a message queue.
Lucene isn't a database, it's a full text search engine.
Cassandra has a query language which is very close to SQL, so it's not really NoSQL.
- jimktrains2 9y ago> Redis is usually used in the context of a message queue. Or caches, or simple data stores for things like counts.
- manigandham 9y ago> Nobody uses Redis like a database and expects persistence of data. Plenty of people do, it's got just as good persistence and backups as anything else. It's very versatile and used for lots of situations, with message queues just being one option (although not a great fit until it gets a stream data type).
- richardknop 9y agoRedis is either used as pub sub / message queue but also often it is used for caching similar to memcached.
- thehardsphere 9y agoCaching does not have the same expectations for persistance that a database has. If data in Redis gets blown away, I don't really care. If data in my RDBMS or NoSQLDB gets blown away, it's a huge problem.
- richardknop 9y agoYes, I agree. Most people I know would use RDBMS such as Postgres to store bulk of business data (customer accounts, transactions, receipts etc) and then use complementary systems for other purposes (so could be Memcache/Redis for caching, ElasticSearch for logs etc). It's not a false dichotomy of using either Postgres or Redis, you can use them alongside each other, they have different uses.
- joshlemer 9y ago>Nobody uses Redis like a database and expects persistence of data. You'd be surprised. I know of at least one (extremely) large company that does / has done this.