Tag: transactions

Feed: R-bloggers. Author: R on Thomas Roh. [This article was first published on R on Thomas Roh, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. An important aspect of maintaining databases with an application interface is to ensure atomicity. When performing multiple writes on a database, any failures that occur during the operations should not violate any logical rules. The most common analogy is a financial transaction. If person A withdraws X dollars ... Read More

Feed: AWS Big Data Blog. Data lakes on Amazon Simple Storage Service (Amazon S3) have become the default repository for all enterprise data and serve as common choice for a large number of users querying from a variety of analytics and ML tools. Often times you want to ingest data continuously into the data lake from multiple sources and query against the data lake from many analytics tools concurrently. Previously, getting consistent results meant that you had to build custom pipelines to keep data consistent and resulted in delays before the data became available to the consuming tools. We announced AWS Lake Formation transactions, row-level ... Read More

Feed: Planet MySQL; Author: Mirko Ortensi; While testing a XA transactions based workload, I noticed in the output of SHOW ENGINE INNODB STATUS; ---TRANSACTION 108674, ACTIVE (PREPARED) 35 sec 4 lock struct(s), heap size 1136, 5 row lock(s), undo log entries 2 So far, so good. A XA transaction has been PREPARED, and reported as such. But after a while (and I was not really looking at the session), I repeated the command and the output turned to: ---TRANSACTION 108674, ACTIVE (PREPARED) 91 sec recovered trx 4 lock struct(s), heap size 1136, 5 row lock(s), undo log entries 2 I ... Read More

Feed: Planet MySQL; Author: Codership; A significant improvement has come to Galera Cluster 4 for MySQL, in the form of streaming replication. When you are dealing with large (greater than 2GB in size) or long running transactions, previous releases of Galera Cluster would reject the transaction; in the current release transactions can be split into fragmented chunks and those rows can be replicated in chunks to the other nodes even before commit. This is the feature that will remove you from all cluster stall issues due to large transaction processing! While disabled by default, you can use it and configure ... Read More

Feed: Planet PostgreSQL. Last month we released Citus 10 and we’ve received an overwhelming amount of positive feedback on the new columnar compression and single node Citus features, as well as the news that we’ve open sourced the shard rebalancer. The new and exciting Citus 10 features are bringing in lots of new users of Citus open source and the managed Hyperscale (Citus) option in Azure Database for PostgreSQL. And many of you are asking: “How exactly does Citus scale out Postgres?” How does Citus work? As it happens, I recently gave a talk as part of the Vaccination Database ... Read More

Feed: The Connector by Workato. Author: Jon Gitlin; What are the pros and cons of using an RPA solution? What impact does the citizen developer movement have on IT teams? And how many integration and automation tools does the enterprise need? These were just some of the questions that IT leaders Karl Mosgofian, CIO of Gainsight, and Shail Khiyara, a former CMO at Automation Anywhere and CXO at UiPath, tackled at their session—from our Executive Automation Series—, “Perspectives on Automation: RPA vs. CIO.”  To help you walk away with the key insights they shared, we’ll break down the session’s top ... Read More

Feed: AWS Partner Network (APN) Blog. Author: Diego García. By Diego García, Partner Solutions Architect Manager at AWS By Emanuele Cuoccio, Solutions Architect at AWSBy Guillermo Torres, Product Developer Lead at Linke A top priority for the more than 5,000 active customers running SAP workloads on Amazon Web Services (AWS) is to regularly back up their databases to recover them in case of failure. Regarding where to ship the backups, Amazon Simple Storage Service (Amazon S3) is a cost-effective, highly durable, and reliable storage service. This makes it the preferred storage service for storing database backups, both in general and ... Read More

Feed: Planet PostgreSQL. This blog is about my work on the Postgres open source database, and is published on Planet PostgreSQL. PgLife allows monitoring of all Postgres community activity. Replica Scaling by the Numbers Friday, April 9, 2021 I have previously blogged about scaling of read-only and read/write workloads. Inspired by this email thread, I want to be more specific about exactly what scaling you can expect by using read-only replicas. First, as the email poster pointed out, read replicas still have to replay write transactions from the primary server. While the replica servers don't need to execute the write ... Read More

Feed: Neo4j Graph Database Platform. Author: David Penick. “Once we noticed that we were modeling transactions as a graph, we went out to look for a native graph database and we found that Neo4j was a great fit for this use case,” said Jorge Zaccaro, Software Engineer at Minka.In this week’s 5-minute interview, we spoke to Jorge Zaccaro, Software Engineer at Graphie Award winner Minka about how they use Neo4j for real-time transaction processing. Tell us a little about yourself.I’m a software engineer, and I focus on digital currencies and monetary economics. How are you using graphs?A few years ago ... Read More

Feed: Featured Blog Posts - Data Science Central. Author: Tom Wilson. Given the recent pandemic’s uncertainty and disturbances, it is not surprising that investors seek more information before making a decision. Although alternative data is not new, it has been the recent focus for many investing firms. A recent study concluded that the global alternative data market size would grow at a 44% CAGR from 2020 to 2026, reaching an impressive $11.1 billion. The following sections explore the importance of alternative data and its predicted trends this year.  What is alternative data? Alternative data datasets contain any type of information ... Read More