What is MongoDB?

Sunil Sirvi
3 min readSep 28, 2021


MongoDB is a document-oriented NoSQL database used for high volume data storage. Instead of using tables and rows as in the traditional relational databases, MongoDB makes use of collections and documents.

MongoDB stores data in JSON-like documents that can vary in structure, offering a dynamic, flexible schema. MongoDB was also designed for high availability and scalability, with built-in replication and auto-sharding.MongoDB is a tool in the Databases category of a tech stack. MongoDB is an open-source tool with 19.7K GitHub stars and 4.8K GitHub forks.

Why we use MongoDB ?

  1. Load balancing — MongoDB uses the concept of sharding to scale horizontally by splitting data across multiple MongoDB instances. MongoDB can run over multiple servers, balancing the load and/or duplicating data to keep the system up and running in case of hardware failure.
  2. Indexing — Indexes can be created to improve the performance of searches within MongoDB. Any field in a MongoDB document can be indexed.
  3. Humongous — MongoDB has been used to build solutions with clusters having over 1,000 nodes, delivering millions of operations per second on over 100 billion documents and petabytes of data
  4. Polymorphic Data-Type — Same placeholder can have a different datatype
  5. The big size limit per Document (16 MB), lets you keep related data together
  6. Optimized for reads with its rich query language & full feature index support
  7. Speed: It’s high-performing for simple queries.
  8. Flexibility: You can add new columns or fields on MongoDB without affecting existing rows or application performance.

Advantages of MongoDB:

  • It is a schemaless NoSQL database. There is no need to design the schema of the database
  • It eliminates the need for complex join operations.
  • It provides flexibility to the fields in the documents.
  • It contains heterogeneous data.
  • It also supports multiple document ACID transitions.
  • It does not require any SQL injection.

Disadvantages of MongoDB:

  • It uses high memory for data storage.
  • You are not allowed to store more than 16MB of data in the documents.
  • There are concurrency issues that need to be taken care of.
  • The nesting of data in JSON is also limited.
  • Sometimes it offers higher latency reads.

Who uses MongoDB?

According to the resources jotted down by StackShare 3802 companies reportedly use MongoDB in their tech stacks, including Uber, Lyft, and Delivery Hero.


The demand for NoSQL databases like MongoDB has gone up in the recent times. Here are some real-world use cases of MongoDB along with some companies that use MongoDB for their practical applications. We hope this article will help you understand MongoDB and it’s practical applications.

Companies and organizations that already make use of Studio 3T-powered MongoDB range across the spectrum, from large airlines and software companies like Air France and Intel to supermarkets and search engines like Whole Foods and Yahoo.

The applications of MongoDB are truly endless in the digital era. Should you decide that MongoDB is the right database for the job, we hope you choose the right GUI.

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