README.md: add a secion on concurrency model

README.md

@@ -10,6 +10,15 @@ This allows easy read and write from any programming language, without special b
 🏗️ RadixDB is currently in active development. We plan to announce its readiness for
 general availability when appropriate. Stay tuned for updates.
 
+## Concurrency Model
+
+The Go implementation of RadixDB employs a concurrency model based on the
+[single-writer, multi-reader](https://en.wikipedia.org/wiki/Readers%E2%80%93writer_lock)
+paradigm. This model allows multiple readers to access the database concurrently without
+locking, while write operations are limited to a single writer at a time to ensure
+data integrity. Other implementations of RadixDB might adopt different concurrency
+models to better suit specific performance needs or language constraints.
+
 ## Contributing
 
 Contributions of any kind are welcome.