Redis vs Postgres | Popularity, Salary, Performance, Features, and Applications

Redis vs Postgres

Redis is an open-source, in-memory data store used by millions of developers as a database, cache, streaming engine, and message broker.

Redis is popular for real-time applications that require low latency and high throughput. It is also commonly used for caching database queries, complex computations, API calls, and session state.

On the other hand, 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.

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 Postgres over Redis.

Generally, PostgreSQL is more popular than Redis. DB-ENGINES 2023 ranks PostgreSQL as the 4th most popular database and Redis is ranked as the 6th 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, Redis is the 6th most popular database, it is used by 24.97% of professional developers.

Redis and Postgres are two of the most loved databases. Redis has been the most loved database from 2017 to 2021

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.

Redis is the second most loved database, it is loved by 71.04% of developers versus 28.96% of developers who dreaded it.

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


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 programming language, the more likely you are of getting a higher salary.

Generally, Redis developers earn slightly higher salaries than Postgres developers.

According to a Stack Overflow survey of top-paying databases, Redis developers get an average salary of $76,783 per year while Postgres 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 Redis over Postgres, because you are more likely to get a higher salary as a Redis developer than as a Postgres developer.


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

Redis is a multi-model database, meaning that it supports a variety of database paradigms.

This makes Redis much easier than Postgres because Redis allows you to use a database paradigm that you are comfortable with.

PostgreSQL can be more complex to set up and administer than Redis, 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 Redis and Postgres to help you learn Database technologies.

The Redis and SQL Postgres communities are very big, active, and helpful, in case you get stuck with something.


Both PostgreSQL and Redis are high-performance databases. Redis is an in-memory database and is designed to be extremely fast and efficient in handling large volumes of data.

Redis is also a Key – Value store database, this provides advantages that other traditional databases may not have.

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

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.


Redis has many amazing features that make it a popular choice for many developers. It comes with a data structure server that supports strings, hashes, lists, sets, sorted sets, streams, and more.

Another great feature of Redis is that; it Keeps the dataset in memory for fast access, but it can also persist all writes to permanent storage to survive reboots and system failures.

It is a great fit for use cases that require real-time data processing and analytics.

Redis is used by companies such as Twitter, Pinterest, Craigslist, GitHub, Stack Overflow, Snapchat, 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.


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 high-paying, open-source multi-model database that you can use for real-time data processing, caching, streaming engine, and as a message broker, you should learn Redis over Postgres.

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 Redis.