meaning of mongo

Customize the Prompt Custom tipsModify the content of the prompt by setting the variable in the prompt mongo shell. The prompt  variable can hold strings as well as JavaScript code. If prompt holds a function that returns a string, the mongo can

Some things are recorded and will be used again soon.1. Updating complex nested objects from MongoDB to SOLRRecently using Mongo-connector to open MongoDB with SOLR, for simple JSON, update is no problem. The problem we have this time is that if the

The production environment uses the MONGO database.Long-coveted for the MONGO database, its high performance/open source/modeless/document-based database/... What a tempting feature, also occasionally tossing and playing, but did not make notes,

Mongo server cluster configuration learning secondary replica set the so-called replica set is a master-slave cluster with automatic fault recovery function. The biggest difference between master-slave replication and replica set in learning No. 1

This article teaches you how to store the JSON content that you configure under the project in the MongoDB database when the project is started.As we all know, Spring Boo Project T is started with a main function. So we want to be able to do

Encapsulate a NLog + NLog. Mongo-based logging tool LogUtil and nloglogutil Encapsulate an object based on NLog + NLog. the Mongo Logging Tool class is LogUtil. The code is relatively simple. It mainly integrates the logging target configuration and

Query the first document that meets the criteria (cannot be called a record for MONGO)Db. Collection_name.findone ({},{});Query for eligible documents and sort by specified criteria, skip the previous N1 documents, and return a list of up to N2

1. PreambleMongoDB is a scalable, high-performance, open-source, mode-free, document-oriented database. It is written using C + +. MongoDB contains features: L? Collection-oriented storage: suitable for storing objects and data in JSON form.

Long wanted to write an article MongoDB, suffering from wood has time, today I have learned the MongoDB knowledge integration, share out, part of MongoDB knowledge from the network. No link here, if there is infringement, please contact me in time ..

relational databases Follow acid rulesTransactions are transaction in English, similar to real-world transactions, and have the following four features:1, A (atomicity) atomicityAtomicity is easy to understand, that is, all operations in a