Is SQL not scalable?

Question

People have said “SQL doesn't scale” because they use it in dumb ways and expect it to handle whatever load or scale of work they throw at it. They don't analyze queries, or create indexes needed for their queries. They don't provision server capacity needed for the scale of their data. 9 янв. 2018 г.

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.

Is SQL server scalable?

SQL Server 2016 (13. x) contains scalability enhancements to the on-disk storage for memory-optimized tables.

Are SQL databases horizontally scalable?

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.

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