Auto-WLM: machine learning enhanced workload management in Amazon Redshift

I attended the University at Buffalo Hacking event over the weekend. It was fun. There were 90+ projects, I judged 15 projects. There were some interesting talks as well. It was good to see youth energy. It feels good to teach next generation something.Another thing, GeoGuessr played as a group game under time pressure is a lot of fun. This may...

The chapter 9 of the Designing Data Intensive Applications (DDIA) book has the following 4 sections (which contain a total of 10 subsections). Consistency guaranteesLinearizabilityOrdering guaranteesDistributed transactions and consensusTMI (Too much info)The chapter tries to do too much. Almost an entire semester of distributed systems content...

This is a long chapter. It touches on so many things. Here is the table of contents.Faults and partial failuresUnreliable networksdetecting faultstimeouts and unbounded delayssync vs async networksUnreliable clocksmonotonic vs time-of-day clocksclock sync and accuracyrelying on sync clocksprocess pausesKnowledge truth and liestruth defined by...

We are continuing from the first part of our Chapter 7 review. Serializable isolation ensures that the final result of concurrent transactions is equivalent to if they had been run one at a time, without any concurrency. This eliminates any concurrency anomalies, since it ensures the transactions would behave as they would in a sequential...

Chapter 7 of the Designing Data Intensive Applications (DDIA) book discusses transactions, yay! Transactions in database systems group multiple operations into a logical unit, a box of operations if you will. They simplify error handling and help manage concurrency issues. See Gray-Reuters book introduction and fault-tolerance sections for the...