About
Jim is a developer who has spent a large part of his career helping people understand complex, emerging technology. He is passionate about distributed systems, data and open source technologies. He is also a startup-aholic and loves building apps and new communities. He is currently the VP of Product Marketing at Cockroach Labs and has helped build companies like Hortonworks and CoreOS. Jim has a BS from the University of Illinois at Chicago, a MS from Carnegie Mellon University.
Jim Walker has presented the following presentations
Database Isolation Levels, Data Issues and Global Transaction Consistency
at
Postgres Webinar Series
presented by Jim Walker and Chris Casano
video
Dirty reads, phantom reads, write skew, ACID rain? These are all data concerns that are often overlooked, but can be very troubling and super expensive. Are you familiar with database isolation levels and how they can impact these data integrity?
In this session, we walk through a definition of these potential data issues and then map them talk about database isolation levels. We will then...
more Wed 7 2020 Data
Scaling PostgreSQL: Never Shard Again and Gain Effortless Scale
at
Postgres Webinar Series
presented by Jim Walker and Chris Casano
video
Sharding is how most of us scale Postgres. It works, however, it is not without its challenges. What key should we shard on? How big will my shards need to be? How will sharding affect performance? What application-level mods will need to happen? What happens if we need to re-shard the database?
Automating the sharding process seems right. We should be able to define a shard and let the db t...
more Thu 25 2020 Case Study
The Architecture of a Geo-Distributed SQL Database
at
Postgres Webinar Series
presented by Jim Walker
video
Join us for a deep dive into the internals of CockroachDB, an open source, distributed SQL database. In this technical presentation, Bill Kendall will cover the usage of Raft for consensus, the challenges of data distribution, distributed SQL execution, and how CockroachDB has solved some of the thornier challenges of distributed ACID transactions and SQL optimization.
Wed 15 2020 Dev