How Transaction Locks support Zero Overhead Distributed DML
April 3, 2019
Let us imagine a scenario that needs to prevent MVCC write skews…
Coding Challenges and More
April 3, 2019
Let us imagine a scenario that needs to prevent MVCC write skews…
April 3, 2019
As I explained in a previous blog post, sometimes MVCC is not sufficient and an operation needs to block out all other concurrent modifications. NuoDB is able to lock three types of lockable resources: tables, schemas, and sequences. A resource can either be locked in SHARED mode (which still allows record modification, but no metadata modification) or EXCLUSIVE which prevents any concurrent modification.
September 24, 2018
September 22, 2018
September 21, 2018
September 20, 2018