MongoDB vs PgHero: What are the differences?

Introduction

In this markdown, we will discuss the key differences between MongoDB and PgHero.

1. Data Structure: MongoDB stores data in a flexible, JSON-like format called BSON which allows for easy scalability and integration with various applications. PgHero, on the other hand, stores data in a more structured, tabular format similar to traditional SQL databases, which can provide better data consistency and readability.

2. Query Language: MongoDB uses a query language that is based on JavaScript and JSON syntax, making it easier for developers familiar with these languages to work with the database. PgHero, being a PostgreSQL extension, uses SQL for querying data, which is more standardized and widely used in the industry for relational databases.

3. ACID Compliance: MongoDB's default configuration does not support ACID (Atomicity, Consistency, Isolation, Durability) compliance, making it more suitable for applications where speed and scalability are prioritized over strict data consistency. PgHero, being an extension of PostgreSQL, fully supports ACID compliance, making it better suited for applications where data integrity is critical.

4. Scalability: MongoDB is known for its horizontal scalability, allowing for distributed databases across multiple servers, which can handle large amounts of data and traffic efficiently. PgHero, while capable of scaling vertically by adding more resources to a single server, may face limitations in terms of handling massive volumes of data compared to MongoDB.

5. Indexing: MongoDB uses dynamic schemas which allow for quick iterations and changes to database indexes based on evolving application requirements. In contrast, PgHero utilizes static schemas and requires explicit management of database indexes, which can provide better optimization control but may require additional effort for maintenance and updates.

6. License: MongoDB is released under the SSPL (Server Side Public License), which imposes restrictions on how the database can be used in commercial applications, potentially requiring paid licenses for certain scenarios. PgHero, being an extension of PostgreSQL, follows the PostgreSQL license, which is open-source and allows for more flexibility in usage and distribution.

In Summary, MongoDB and PgHero differ in data structure, query language, ACID compliance, scalability, indexing, and licensing terms.