Category
Sort By
Recently, I got a chance to dockerize a traditional MongoDB replica set. Currently, I am doing it for QA and UAT environment where MongoDB replica set is setup on a single host. So, in this blog, we will do it on a single host using Docker Networking and Docker Compose. Scenario: Set up a MongoDB replica using version 3.0.5 set...
Application Security, Technology
MongoDB is a NoSQL database that delivers a performance oriented, highly available and scalable database system. Recently, a large number of MongoDB instances were found to be publicly accessible over the Internet. A large amount of data was leaked due to the fact that these instances were running an outdated and unpatched version of...
Mongo Monitoring Service(MMS) is a service that ensures that the MongoDB is up and running and can alert us when the service is stopped/restarted.It can be run on an on-premise architecture or in the cloud like AWS. Use Case We have multiple servers running MongoDB service and they are present in different environments as Production,...
It's a common practice to add fields to Grails domain's hasMany block while in database a foreign key relationship is maintained for every such entry. In other words, for each foreign key, we have a column in parent table (or domain) and a reference column in other table. I was adding a field into hasMany block recently when I got this...
One of the best practices of Automation testing is to leave the system from the state where you started your test from. While doing functional testing for an angularjs application using Protractor and Cucumber (BDD framework), there was a need to clean up whatever data was being generated in the Data setup (generally the Given) of the...
In this blog we will setup the jmeter and we will see how to create a simple test plan to test the database server.We will use MySql database server for our test purpose or you can use any-other database. Setup requirement Download the latest jmeter from here and untar jmeter in you home directory. Download JDBC driver is...
Hashing is one of the main concepts that we are introduced to as we start off as a basic programmer. Be it 'data structures' or simple ‘object’ notion - hashing has a role to play everywhere. But when it comes to Big Data - like every thing else, the hashing mechanism is also exposed to some challenges which we generally don’t...
Lets start with a basic find query in mongoose and observe its execution time. [js] Event.find({'schedule.closing': {'$gte': +new Date()}}, {}, {limit:20, skip:0} ).exec(function (err, events){ ........ ........ } ); [/js] In my last project on Nodejs, I have used the above query to fetch the events...
MySQL and MongoDB are a very popular open-source databases these days. Through this blog, I wanted to share a use case of migrating MySQL database to MongoDB database and perhaps want to share few lessons during the migration process which would be helpful. There are three steps to the migration process: Suppose you have a user...
In our previous post, we saw how simply we could use the free text search feature from MongoDB. In continuation to that, in this post we would be looking at how can we create multiple text indexes and understand how actually the things work. Document Scoring MongoDB assigns a score to each of the document that contains the search term...
MongoDb introduced free text search beta in its v2.4 but it was in experimental phase. In v.2.6, MongoDb has finally made its free text search (the most requested feature) production ready. In this post, we will have a look at how can we use this pretty useful feature that MongoDb offers us. To enable Free text search, Mongodb...
Mongoose is a Node.js package that gives you an interface to play with mongo database. Mongoose has all sets of methods that help you to connect and access data stored in database. It translates data from database in javaScript object which you can provide to your application. We will move step by step to know how it works. 1....
