DynamoDB vs Postgres

DynamoDB vs Postgres

PostgreSQL is an open source object-relational database that emphasizes extensibility and SQL compliance.

PostgreSQL is a very powerful database system, it is designed to handle a range of workloads, from single machines to data warehouses or Web services with many concurrent users.

PostgreSQL also extends the SQL language combined with many features that safely store and scale the most complicated data workloads.

On the other hand, DynamoDB is a fully managed serverless key-value NoSQL database designed to run high-performance applications at any scale.

DynamoDB is owned and offered by Amazon as part of their Amazon Web Services (AWS) portfolio.

DynamoDB offers built-in security, continuous backups, automated multi-Region replication, in-memory caching, and data import and export tools.

One of the major differences between PostgreSQL and DynamoDB is that PostgreSQL is a relational database system that uses the SQL language while DynamoDB is a NoSQL, Key – Value, and Document-based database.

Comparing databases and choosing which one to learn or use for your next project can be tricky.

There are many factors to consider in order to choose the right database for the job you want to do.

Popularity, opportunities, type of projects, salaries, resources, learning curve, etc. are some of the factors that many people consider when comparing databases and choosing which one to learn or use.

Here are some of the comparisons and considerations you should make when choosing a Database.


Comparing the popularity of databases is not an easy task. Although the primary use of databases is to store and retrieve data, many databases are different in how they approach data storage and retrieval.

As a result, different fields and projects may require the use of different databases.

If you want to learn or use a database solely for its popularity among developers, you should learn and use PostgreSQL over DynamoDB.

Generally, PostgreSQL is more popular than DynamoDB. As of April 2023, DB-ENGINES ranks PostgreSQL as the 4th most popular database and DynamoDB is ranked as the 16th most popular database.

According to a Stack Overflow survey of 2022, PostgreSQL is the most popular database, it is used by 46.48% of professional developers.

On the other hand, DynamoDB is the 10th most popular database, it is used by 9.42% of professional developers according to the same survey.

PostgreSQL is also loved by many developers than DynamoDB. As of 2022, PostgreSQL is the most loved database, it is loved by 72.08% of developers versus 27.92% of developers who dreaded it.

On the other hand, DynamoDB is loved by 53.63% of developers versus 46.37% of developers who dreaded it.

Ultimately, if your choice of which database to learn or use depends on popularity, you should learn PostgreSQL over DynamoDB.


Another popular criterion that many people use to compare databases and as an incentive to learn a new database technology is salary.

Salaries for developers differ from one company to the other and from one country to the other.

Experience is another factor that comes into play as far as salaries are concerned.

The more experience you have with a certain technology or database, the more likely you are of getting a higher salary.

Generally, DynamoDB developers earn higher salaries than PostgreSQL developers.

According to a Stack Overflow survey of top-paying databases, DynamoDB is the highest-paying database of 2022.

DynamoDB developers get an average salary of $94,244 per year while PostgreSQL developers get an average salary of $70,385 per year.

So, if the salary is your major incentive for learning a database technology, you should learn DynamoDB over PostgreSQL, because you are more likely to get a higher salary as a DynamoDB developer than as a PostgreSQL developer.


Some database technologies can be learned more easily than others. DynamoDB is very easy to work with.

With DynamoDB, there are no servers to provision, patch, or manage, and no software to install, maintain, or operate.

DynamoDB’s API is relatively simple and easy to use, with a limited set of operations and no complex SQL queries to master.

If you are already familiar with the AWS ecosystems, you will find DynamoDB very easy to work with.

PostgreSQL can be more complex to set up and administer than DynamoDB, Using PostgreSQL requires a basic to a good understanding of the SQL language.

PostgreSQL may be easier to use for developers who are already familiar with SQL and relational data modeling.

The good news is that there are plenty of helpful resources for both PostgreSQL and DynamoDB to help you learn the Database technologies.

The PostgreSQL and AWS DynamoDB communities are very big, active, and helpful, in case you get stuck with something.


Both PostgreSQL and DynamoDB are high-performance databases. DynamoDB is a Key – Value database, this provides advantages that other databases may not have.

Key-value databases are highly partitionable and allow horizontal scaling at scales that other types of databases cannot achieve.

Amazon DynamoDB guarantees consistent single-digit millisecond performance at any scale.

DynamoDB is also a fully managed NoSQL database that can handle petabyte-scale workloads and can automatically scale up or down based on the traffic and usage patterns.

PostgreSQL, on the other hand, is a more traditional relational database that is optimized for complex queries and data manipulation.

PostgreSQL’s query optimizer is highly advanced and can quickly generate efficient query plans for complex queries, even with large datasets.

PostgreSQL also supports various indexing techniques and advanced features like full-text search and geospatial queries, which can improve performance for specific use cases.


DynamoDB is also popular in the enterprise world. Being part of the AWS portfolio, DynamoDB provides the simplicity that small startups require and the robustness required by big companies.

DynamoDB offers built-in security, automated multi-Region replication, in-memory caching, continuous backups, data modeling tools, and more.

DynamoDB is used by companies such as Disney, Tinder, Netflix, Zoom, Dropbox, Nike, Samsung, Snapchat, Airbnb, Comcast, Lift, and many others.

PostgreSQL is a feature-rich relational database management system (RDBMS) that offers a number of unique features that set it apart from other database systems.

It provides a rich set of extension points, which allows developers to extend the functionality of the database system using custom code.

PostgreSQL also provides a sophisticated concurrency control system that allows multiple users to access the database simultaneously without conflicts.

It supports multi-version concurrency control (MVCC), which allows reads and writes to occur simultaneously without locking the entire table or database.

PostgreSQL is used by companies such as Instagram, Apple, Heroku, Spotify, Netflix, Reddit, Twitch, Uber, BitLeap, Proximity Group, and many others.


PostgreSQL is an open-source database, which means that it is free to use and there are no licensing costs associated with it.

However, you will need to pay for the infrastructure to host the database, which may include costs for servers, storage, and bandwidth.

You may also need to pay for additional services like monitoring, backup, and maintenance.

DynamoDB is a fully managed database and is billed based on usage, storage, and throughput.

It offers a free tier with limited usage and low cost for small workloads but can get expensive for large-scale workloads.


Once you have compared the databases and evaluated all the factors, you can choose which database technology to learn or use depending on the factors that are on your side and what you want to build.

If you want a popular, open-source object-relational database that you can use for complex queries, full-text search, Geospatial data, advanced datatypes, and more, you should learn PostgreSQL over DynamoDB.

If you want a high-paying database that you can use for caching, complex queries, real-time video streaming, and applications that require high concurrency, you should learn DynamoDB.