Sequential consistency without borders: How D1 implements global read replication

What this post added

Introduced the D1 Sessions API to enable sequential consistency for read-after-write operations across globally distributed read replicas. The Sessions API manages session bookmarks to ensure that read queries on replicas are at least as up-to-date as the last observed write, guaranteeing 'read your own writes' and 'writes follow reads' properties even when client requests are routed to different database instances.