Evolution of libSQL functionalities and implementation in serverless environments

The chapter covers the development of user-defined functions and native replication features in libSQL, explaining their implementation to enable flexibility and concurrency in SQLite. It discusses the evolution of the write-ahead log concept in SQLite and its implementation in libSQL to facilitate replication before writing to disk. Furthermore, it explores the concept of 'lib SQL server' for enabling SQLite over HTTP, interactive transactions, and multiple replication modes in serverless environments, including the use of embedded replicas for scaling out applications with multiple writers.