Tag: Cache

Feed: AWS Compute Blog. Author: Ronnie Eichler. With the recent launch of Lambda@Edge, it’s now possible for you to provide even more robust functionality to your static websites. Amazon CloudFront is a content distribution network service. In this post, I show how you can use Lambda@Edge along with the CloudFront origin access identity (OAI) for Amazon S3 and still provide simple URLs (such as www.example.com/about/ instead of www.example.com/about/index.html).Background Amazon S3 is a great platform for hosting a static website. You don’t need to worry about managing servers or underlying infrastructure—you just publish your static to content to an S3 bucket ... Read More

Feed: Redis Labs. Author: Cihan B. For many interactive applications, responsiveness is key to engaging and fluid experiences. However, RAM is expensive. Keeping a large amount of data with Redis can be costly. Given the infrastructure cost, you end up choosing between the following 2 options; #1: Pay a premium for storing sizable datasets in RAM with Redis OR#2: Limit Redis database use to the most valuable data and augment Redis with disk-based relational or NoSQL databases. Redis Enterprise Flash provides a better option #3: Redis Enterprise Flash technology combines RAM and flash to store large data sets in Redis ... Read More

Feed: MariaDB Knowledge Base Article Feed. Author: . This document and the attached example code explain prospective plugin developers the MariaDB MaxScale plugin API and also present and explain some best practices and possible pitfalls in module development. We predict that filters and routers are the module types developers are most likely to work on, so the APIs of these two are discussed in detail. Table of Contents Introduction MariaDB MaxScale is designed to be an extensible program. Much, if not most, of the actual processing is done by plugin modules. Plugins receive network data, process it and relay it ... Read More

Feed: MariaDB Knowledge Base Article Feed. Author: . This filter was introduced in MariaDB MaxScale 2.1. Overview Note that the cache is still experimental and that non-backward compatible changes may be made. The cache filter is a simple cache that is capable of caching the result of SELECTs, so that subsequent identical SELECTs are served directly by MaxScale, without the queries being routed to any server. The cache will be used and populated in the following circumstances: There is no explicit transaction active, that is, autocommit is used, there is an explicitly read-only transaction (that is,START TRANSACTION READ ONLY) active, ... Read More

Feed: Planet MySQL; Author: rathishDBA; The main objective of this post is to understand why innodb_fush_log_at_trx_commit variable is used? What are the applicable values for innodb_fush_log_at_trx_commit? How innodb_fush_log_at_trx_commit value will impact the MySQL performance and data safety?  How to change innodb_fush_log_at_trx_commit value? and How to change the frequency of InnoDB log flush?Why innodb_fush_log_at_trx_commit?In order to understand why we need innodb_fush_log_at_trx_commit variable, we should know about how InnoDB works. It is a huge and complex topic and it is not the scope of this article. I am trying to cover this topic in simple words and it is given below:InnoDB performs most ... Read More

Feed: Percona Database Performance Blog. Author: Sveta Smirnova. Sveta Smirnova  | October 12, 2017 |  Posted In: Insight for DBAs, MySQL, Percona Server PREVIOUS POST In this blog, we’ll look at a mystery around setting the open_files_limit variable in MySQL and Percona Server for MySQL. MySQL Server needs file descriptors to run. It uses them to open new connections, store tables in the cache, create temporary tables to resolve complicated queries and access persistent ones. If mysqld is not able to open new files when needed, it can stop functioning correctly. A common symptom of this issue is error 24: "Too many open files" ... Read More

Feed: Microsoft Azure Blog. Author: Greg Cottingham. In honor of National Cybersecurity Awareness Month (NCSAM), we have a new post in our series highlighting real-world attacks that Azure Security Center helped detect, investigate, and mitigate. This post is about an attack which used PowerShell to run malicious code and collect user credentials. But before we jump in, here’s a recap of other blog posts in our series where Security Center detected a: SQL Brute Force attack Bitcoin mining attack DDoS attack using cyber threat intelligence Good applications being used maliciously In this post, we’ll walk through another interesting real-world attack ... Read More

Feed: Microsoft Azure Blog. Author: Jean-Marc Prieur. ADAL.NET (Microsoft.IdentityModel.Clients.ActiveDirectory) is an authentication library which enables developers to acquire tokens from Azure AD and ADFS to access Microsoft APIs or applications registered with Azure Active Directory. ADAL.NET is available on several .NET platforms including Desktop, Universal Windows Platform, Xamarin / Android, Xamarin iOS, Portable Class Libraries, and .NET Core. We just released ADAL.NET 3.17.0 which enables new capabilities and brings improvements in terms of usability, privacy, and performance. Enabling new capabilities ADAL.Net 3.17.0 enables you to: Write more efficient applications, tolerant to Azure AD throttling. Force end users of your apps ... Read More

Feed: What's New. Amazon DynamoDB Accelerator (DAX) is a fully managed, highly available, in-memory cache for DynamoDB that delivers up to a 10x performance improvement – from milliseconds to microseconds – even at millions of requests per second. DAX does all the heavy lifting required to add in-memory acceleration to your DynamoDB tables, without requiring you to manage cache invalidation, data population, or cluster management. Now you can simply focus on building great applications for your customers without worrying about performance at scale. Using DAX is easy and requires no modification to your application logic, since DAX is compatible with ... Read More

Feed: Microsoft Azure Blog. Author: Kiran Madnani. At Ignite 2017, we announced the public preview of near real-time metric alerts in Azure. This new kind of alerts provide the following improvements over the current metric alerts. Improved Latency – You can create near real-time metric alerts that monitor metric values as frequently as 1 minute. More control over metric conditions – You can create near real-time metric alert rules that can monitor minimum, maximum, average, and total of the metric over the evaluation period. Combined monitoring of multiple metrics – You can create a single near real-time metric alert rule ... Read More