⚡ Key-Value Databases
Key-value databases are database systems that store data as collections of unique keys associated with corresponding values, enabling very fast data retrieval and updates with minimal query overhead.
They usually support in-memory storage, distributed architectures, replication, persistence options, automatic partitioning, and high write throughput, and are typically used for session storage, caching, queues, and large-scale data processing.
⭐ Most Popular in 2026
The following chart shows the leading key-value databases on the web in 2026, based on market share.
The most popular is 
Memcached with a share of 6.4%, followed by Redis with 6.4% and 
Amazon DynamoDB with 0.007%.
- Memcached 6.4%
- Redis 6.4%
- Amazon DynamoDB 0.007%
Bigtable 0.004%
RocksDB 0.002%
🚀 Country Highlights
Here is a list of databases that are especially popular in certain countries.
Differences between global and country rankings are shown in parentheses.
- Redis is #2 in the United Kingdom (-1)
✨ Best Key-Value Databases
Below is a more detailed list of 5 key-value databases we track, ranked by their market share.
🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- This report is based on the analysis of 3,533,773 websites.
- We currently track the presence of 24 databases across the web.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.