Why SQL database is not scalable?

Why is SQL not scalable?

The main reason relational databases cannot scale horizontally is due to the flexibility of the query syntax. SQL allows you to add all sorts of conditions and filters on your data such that it's impossible for the database system to know which pieces of your data will be fetched until your query is executed.

Is SQL easily scalable?

Most SQL databases are vertically scalable, which means that you can increase the load on a single server by increasing components like RAM, SSD, or CPU. In contrast, NoSQL databases are horizontally scalable, which means that they can handle increased traffic simply by adding more servers to the database.

Do SQL databases scale?

Traditional SQL databases can't typically scale horizontally for write operations by adding more servers, but we can still add other machines in the form of read-only replicas. The way this works is that all write operations are done on the main server and propagated to other machines using Write Ahead Log.

Why MySQL is not scalable?

Avoid MySQL Scalability Limitations MySQL was originally designed as a single-node system and not with the modern data center concept in mind. Today's largest MySQL installations cannot scale by using MySQL as a single system and must rely on sharding, or splitting a data set over multiple nodes or instances.