architecture - When to Redis? When to MongoDB? - Stack
2011年3月23日 · MongoDB offers simplicity, much shorter learning curve for developers with traditional DB and SQL experience. However, Redis's non-traditional approach requires more effort to learn, but greater flexibility. Eg. A cache layer can probably be better implemented in Redis. For more schema-able data, MongoDB is better.
MongoDB database architecture - Stack Overflow
2012年3月30日 · 19. MongoDB memory maps the database files. It allows the OS to control this and allocate the maximum amount of RAM to the memory mapping. As MongoDB updates and reads from the DB it is reading and writing to RAM. All indexes on the documents in the database are held in RAM also.
The right MongoDB architecture for a font library?
2015年4月13日 · I'm new to MongoDB and NoSQL databases, and I'm trying to design a database architecture for a font library web-app. Font.js var FontSchema = mongoose.Schema({ families: [{ type: Schema.Types.
MongoDb Replication and failover - Stack Overflow
2018年2月8日 · MongoDB replica set was designed to provide high availability and redundancy. To achieve this, a replica set will have a single Primary node (which writes will go to), and Secondaries (which can take over should something happen to the Primary). To achieve this, MongoDB uses a voting mechanism, and a node must receive the majority vote to ...
Is there any client-server architecture for MongoDB?
2013年3月22日 · cfg.members[0].priority = 0. cfg.members[0].slaveDelay = 3600. rs.reconfig(cfg) this will make member 0 of the replica set lag behind one hour, and since it has priority 0 it cannot be master and hence, can't be written to directly. This doesn't exactly satisfy your constraints because you wanted to synchronize every hour while this setup ...
How to respect Clean Code Architecture with mongoDb database?
2022年3月24日 · Task ReplaceOne(TDocument document); Task DeleteOne(Expression<Func<TDocument, bool>> filterExpression); Task DeleteById(Guid id); Task DeleteMany(Expression<Func<TDocument, bool>> filterExpression); } In the example I found on Clean Architecture, they are mostly using entity framework, which doesn't require …
MongoDB: using onion architecture, does my domain/core layer …
2012年10月6日 · You should not need a reference to MongoDB anywhere except the outer-most layer. In onion architecture, data persistence is considered infrastructure. I would have MongoDB be part of a repository implementation that implements repository interfaces defined in the domain model. MongoDB documents have an _id field that uniquely identifies it. See ...
Where does mongodb stand in the CAP theorem? - Stack Overflow
2012年7月2日 · MongoDB's election protocol is designed to have (at most) a single primary. A primary can only be elected (and sustained) by a strict majority of configured replica set voting members (n/2 +1). In the event of a network partition, only one partition (with the majority of voting members) can elect a primary; a prior primary in a minority ...
Install MongoDB 3.2 or higher on Raspberry pi 3 (Debian 9 (stretch))
2014年2月4日 · I'm trying to get a newer version of MongoDB on my Raspberry Pi 3. I've installed mongodb by: sudo apt-get install mongodb The mongodb version is 2.4.14. The mongodb queries I'm using, require
mongodb architecture - Stack Overflow
2013年11月20日 · I understand MongoDB can be setup as an un-sharded replica set or sharded. Sharded is used by scalability of very large datasets. Question is, at what point do I know that I should use Sharded ve...