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DistributedLog at Twitter for High Performance Logging

by Alex Giamas on  Oct 20, 2015

Twitter is using replicated logs for high performance data collection and analysis of its systems. DistributedLog is the system developed at Twitter for this purpose. Twitter has developed a distributed key-value database, Manhattan. Manhattan can trade consistency for latency in reads following the eventually consistent data model. We examine Twitter's design and tradeoffs for DistributedLog.

The Transition to a New Log4j: a Q&A with Log4j’s Project Management Committee

by Abraham Marín Pérez on  Sep 08, 2015

As recently published in InfoQ, the Apache Software Foundation announced the end of life of version 1 of Log4j, encouraging users to upgrade to version 2 of the popular logging framework. InfoQ reached out to the members of the Apache Logging Services Team to find out more about the transition to the new version of Log4j and about its future.

Log4j Version 1 Reaches End of Life

by Abraham Marín Pérez on  Aug 26, 2015 1

Apache has announced the EOL of version 1 of Log4j. Although Log4j version 2 was released in July 2014, version 1 was maintained until early August 2015. The new version is a full rewrite of the logging library, addressing many of the issues of version 1 and achieving unprecedented performance. Apache has made an effort to ease the upgrade, although advanced users may need some migration work.

Newest NLog Improves Exception Logging, Adds JSON/Zip support

by Jeff Martin on  Jun 18, 2015

NLog 4.0 has been released, and it brings improved exception logging, adds conditional logging, and support for JSON and Zip archives.

Amazon CloudWatch Supports JSON Logs and Integrates AWS CloudTrail

by Steffen Opel on  Feb 12, 2015

Shortly after releasing the AWS CloudTrail Processing Library (CPL), Amazon Web Services has also integrated AWS CloudTrail with Amazon CloudWatch Logs to enable alarms and respective "notifications from CloudWatch, triggered by specific API activity captured by CloudTrail". The implied support for monitoring JSON-formatted logs has recently been officially released as well.

Amazon EC2 Gains Two-Minute Warning for Spot Instance Termination

by Steffen Opel on  Jan 31, 2015

Amazon EC2 recently gained two-minute warnings before Spot Instances are reclaimed, a feature "formally known as a Spot Instance Termination Notice". The goal is to "allow more types of applications to benefit from the scale and low price of Spot Instances" by giving them time to save state, upload log files, or deregister from other components such as load balancers or cluster managers.

AWS Releases CloudTrail Processing Library

by Steffen Opel on  Nov 15, 2014

Amazon Web Services (AWS) recently released the AWS CloudTrail Processing Library (CPL), a "Java client library that makes it easy to build an application that reads and processes CloudTrail log files in a fault tolerant and highly scalable manner".

Amazon CloudWatch Gains Log Monitoring and Storage

by Steffen Opel on  Oct 31, 2014

Amazon CloudWatch recently gained log file monitoring and storage for application, operating system and custom logs and meanwhile enhanced support for Microsoft Windows Server to cover a wider variety of log sources.

Reactive Extensions, Async, and Splunk

by Jonathan Allen on  Oct 12, 2014

The 2.0 version of the Splunk C# SDK is heavily invested in modern C# features. Every major operation from login-onwards is available via asynchronous methods. And for most advanced uses such as sampling, Reactive Extensions come into play.

Apache Log4j 2.0 - Worth the Upgrade?

by Matt Raible on  Jul 31, 2014 8

The Apache Software Foundation recently announced the General Availability of Log4j 2.0, containing many performance improvements over its predecessor Log4j 1.x. Years in the making, this release was written from scratch, and gained its inspiration from existing logging solutions such as Log4j 1.x and java.util.logging.

AWS Expands Credential Lifecycle Management and Monitoring

by Steffen Opel on  Jul 29, 2014

AWS Identity and Access Management (IAM) recently expanded available password policy rules to enable self-service password rotation. A new credential report provides visibility into the AWS credentials security status. AWS also added logging of AWS Management Console sign-in events to AWS CloudTrail.

AWS CloudTrail Expands Auditing of API Calls

by Steffen Opel on  Jun 25, 2014

Amazon Web Services (AWS) has considerably increased the number of services supported by AWS CloudTrail to cover the majority of the extensive AWS service portfolio. This now includes most compute and networking and all deployment and management services, thereby providing comprehensive end to end auditing of almost any changes to customer’s infrastructure.

Integrating Windows Logging Through Linux With Syslog4NET

by Jeff Martin on  Mar 17, 2014

Centralized logging makes application support and troubleshooting much easier, but Windows and Linux/UNIX based systems take different approaches. Syslog4NET provides a way to bridge this gap, allowing Windows applications to directly log to a syslog dameon running on Linux/UNIX.

Windows Event Log Integration with ETW

by Jonathan Allen on  Aug 10, 2013

ETW or Event Tracing for Windows is a high performance logging system that is available for Windows Vista and later operating systems. On a typical system it can handle over 100,000 events per second, but those events are discarded unless something is listening. With the new EventSource library, a portion of those events can be copied to the Windows Event Logged.

Latest Technology Trends on the Radar

by Aslan Brooke on  Aug 06, 2013 1

Thoughtworks recently released a new installment of their technology radar highlighting techniques enabling infrastructure as code, perimeterless enterprises, applying proven practices to areas without, and lightweight analytics.

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