Tag: Cache

Feed: Redis Labs. Author: Lalit Pandit. Over the past 30 years, Inovonics has risen to become a leading provider of industrial wireless IoT technology. We’ve deployed tens of millions of devices in challenging commercial environments across a wide variety of critical applications—from life safety to intrusion alerting to multi-family submetering. And while we work tirelessly every single day to improve the reliability and ingenuity of our wireless infrastructure and IoT solutions, we’ve come to realize that we have an equally compelling product to offer… data! The massive—and unique—sets of data collected by our wireless devices and sensors have tremendous application ... Read More

Feed: Planet MySQL; Author: Airbnb Engineering; Avoiding Double Payments in a Distributed Payments SystemHow we built a generic idempotency framework to achieve eventual consistency and correctness across our payments micro-service architecture.Jon ChewBlockedUnblockFollowFollowingApr 16Authors: Jon Chew and Ninad KhistiOne of the conference rooms in our San Francisco officeBackgroundAirbnb has been migrating its infrastructure to a Service Oriented Architecture (“SOA”). SOA offers many upsides, such as enabling developer specialization and the ability to iterate faster. However, it also poses challenges for billing and payments applications because it makes it more difficult to maintain data integrity. An API call to a service that makes ... Read More

Feed: Microsoft Azure Blog. Author: Arindam Chatterjee. Today we’re announcing the general availability of Apache Hadoop 3.0 on Azure HDInsight. Microsoft Azure is the first cloud provider to offer customers the benefit of the latest innovations in the most popular open source analytics projects, with unmatched scalability, flexibility, and security. With the general availability of Apache Hadoop 3.0 on Azure HDInsight, we are building upon existing capabilities with a number of key enhancements that further improve performance and security, and deepen support for the rich ecosystem of big data analytics applications. Bringing Apache Hadoop 3.0 and supercharged performance to the ... Read More

Feed: R-bloggers. Author: R on msperlin. The Central Bank of Brazil (BCB) offers access to its SGS system (sistema gerenciador de series temporais) with a official API available here. With time, I find myself using more and more of the available datasets in my regular research and studies. Over last weekend I decided to write my own API package that would make my life a lot easier. Package GetBCBData can fetch data efficiently and rapidly: Use of a caching system with package memoise to speed up repeated requests of data; Users can utilize all cores of the machine (parallel computing) ... Read More

Feed: R-bloggers. Author: Jason Timm. I have developed a Git Hub guide that demonstrates a simple workflow for sampling Google n-gram data and building historical word embeddings with the aim of investigating lexical semantic change. Here, we build on this workflow, and unpack some methods presented in Hamilton, Leskovec, and Jurafsky () & Li et al. () for aligning historical matrices/embeddings and visualizing semantic change. library(tidyverse) Google n-gram data As detailed in the Git Hub post, the historical embeddings utilized here span eight quarter-centuries from 1808 to 2008, and are derived from a ~1% sample of Google’s English One Million ... Read More

Feed: Microsoft Power BI Blog | Microsoft Power BI. Author: . Power BI Live Connect reports allow the dataset to be stored in Azure Analysis Services (Azure AS) or SQL Server Analysis Services (SSAS) while the report itself resides in the Power BI service. Report interactivity can be enhanced by Power BI maintaining caches of dashboard tile data and report data for initial load. However, enterprise BI deployments where semantic models are reused throughout organizations can result in a great deal of dashboards and reports sourcing data from a single Analysis Services (AS) model. This can cause an excessive number ... Read More

Feed: Planet MySQL; Author: Shahid shaikh; We have covered session management in ExpressJs using global variable technique which of course will not work in case of shared server or concurrent execution of http requests which is most familiar production scenario. Codeforgeek readers requested to provide solution for these issue and the optimal one is to use external session storage which is not dependent on application requests, answer is Redis cause this is the light weight and easy to use NoSQL database. In this tutorial i am going to explain how to design and code session oriented express web applications by ... Read More

Feed: AWS Partner Network (APN) Blog. Author: AWS Admin. By Brian Davis, Director of IT Operations at Questis Inc.Application developers must balance time between coding features and improving performance and scalability. Most believe that focusing on functionality and features is the priority, but features and application response times go hand-in-hand. Slow performance can adversely affect revenue. As the director of IT operations at Questis, a configurable technology platform for financial intermediaries, we realized our backend infrastructure required additional development to improve performance, provide high-availability, and rapidly scale to meet the needs of Questis customers accessing the platform. Questis allows organizations ... Read More

Feed: AWS Big Data Blog. In the world of big data, a common use case is performing extract, transform (ET) and data analytics on huge amounts of data from a variety of data sources. Often, you then analyze the data to get insights. One of the most popular cloud-based solutions to process such vast amounts of data is Amazon EMR.Amazon EMR is a managed cluster platform that simplifies running big data frameworks, such as Apache Hadoop and Apache Spark, on AWS. Amazon EMR enables organizations to spin up a cluster with multiple instances in a matter of few minutes. It also ... Read More

Feed: Microsoft Azure Blog. Author: Parikshit Savjani. A few months ago, we released a blog post that provided guidance on how to deploy Apache Airflow on Azure. The template in the blog provided a good quick start solution for anyone looking to quickly run and deploy Apache Airflow on Azure in sequential executor mode for testing and proof of concept study. However, the template was not designed for enterprise production deployments and required expert knowledge of Azure app services and container deployments to run it in Celery Executor mode. This is where we partnered with Bitnami to help simplify production ... Read More