What is a key-value store?

A key-value store is a simple type of non-relational (NoSQL) database that stores data as a collection of key–value pairs. Each record consists of a unique key and a value associated with that key. The key is used to look up the data, and the value can be any kind of data from a simple string to a complex object. Key-value stores are schema-less, meaning they do not require a fixed data model and allow flexible data storage without predefined structures. They are known for speed, simplicity, and scalability.

What are popular key-value stores?

Popular key-value store examples include Redis, Amazon DynamoDB, Aerospike, Apache Cassandra (as wide column store with key-value features), Couchbase, Memcached, Riak KV, and ScyllaDB. These stores are widely used in high-performance, cloud-based distributed systems

What is an example of a key-value datastore?

Redis is often cited as a key example. It supports simple to complex data structures such as strings, lists, maps, and hashes and provides very high performance for fast reads and writes. DynamoDB from Amazon Web Services is another widely used managed key-value and document store database.

What is the difference between key-value stores and document stores?

Key-value stores treat the value as an opaque blob and do not interpret its contents. They offer high speed for simple lookups by key but limited query capabilities. Document stores, a subtype of NoSQL databases, store semi-structured data in JSON-like documents allowing querying and indexing of fields within the document.

Key Value Stores Market Trend, Size

Global Key Value Stores Market Size, Share, Industry Analysis Report By Type (In-Memory, Persistent), By Deployment Mode (On-Premises, Cloud), By Enterprise Size (Small and Medium Enterprises, Large Enterprises), By Application (Retail, BFSI, IT and Telecommunications, Healthcare, Government, Others), By Regional Analysis, Global Trends and Opportunity, Future Outlook by 2025-2034

Published date:
Sept. 2025
Report ID:
159820
Number of Pages:
250
Format:

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