Ever wondered how Liferay's internal clustering works? I had to dig into it in context of my other article on globally load balancing Liferay across separate data-centers. This blog post merely serves as a place for my research notes and might be helpful for someone else who is trying to follow what is going on … Continue reading Liferay clustering internals
Author: bitsofinfo
Clustering Liferay globally across data centers (GSLB) with JGroups and RELAY2
Recently I've have been looking into options to solve the problem of GSLB'ing (global server load balancing) a Liferay Portal instance. This article is a work in progress... and a long one. Jan Eerdekens states it correctly in his article, "Configuring a Liferay cluster is part experience and part black magic" .... however doing it … Continue reading Clustering Liferay globally across data centers (GSLB) with JGroups and RELAY2
Testing yas3fs: a distributed S3 FUSE filesystem
I've recently been doing quite a bit of evaluation of a few S3 filesystems, one in particular is yas3fs which so far is quite impressive. I plan on doing a more detailed post about it later, however for now I'd like to share a little tool I wrote to help me in my evaluation of it. You … Continue reading Testing yas3fs: a distributed S3 FUSE filesystem
Part 2: Nevado JMS, Ehcache JMS WAN replication and AWS
This post is a followup to what is now part one, of my research into using Ehcache, JMS, Nevado, AWS, SNS and SQS to permit cache events to be replicated across different data-centers. @see https://github.com/bitsofinfo/ehcache-jms-wan-replicator In my first post I was able to successfully get Ehcache's JMS Replication to function using Nevado JMS as the provider after patching the … Continue reading Part 2: Nevado JMS, Ehcache JMS WAN replication and AWS
Ehcache replicated caching with JMS, AWS, SQS, SNS & Nevado
Read part 2 of this research here Recently I've been researching ways to GSLB a very large app that relies on Ehcache for numerous things internally such as; cached page output, cached lists etc etc. Anyone who has experience getting large scale applications to function active-N in a GSLB'd setup knows the challenges such topologies present. … Continue reading Ehcache replicated caching with JMS, AWS, SQS, SNS & Nevado
Ideas worth spreading
If you haven't been exposed to Nathan Marz's ideas on Big Data, the following links are definitely worth your time: http://manning.com/marz/ http://www.infoq.com/presentations/Complexity-Big-Data http://nathanmarz.com/speaking/
Processing ModSecurity audit logs with Fluentd
Recently had a need to take tons of raw ModSecurity audit logs and make use of them. First used Logstash and then attempted with Apache Flume (see previous articles). Next in line was Fluentd which is what this article is about, long story short I ended up just having to write a Fluentd output plugin to take the output … Continue reading Processing ModSecurity audit logs with Fluentd
Deserializing Modsecurity Audit logs with Apache Flume
This post will be updated in the coming days/weeks, however when looking at using Apache Flume to ingest some ModSecurity Audit logs, it quickly became apparent that Flume's SpoolingDirectorySource lacked the ability to de-serialized "events" from a file that spanned many "new lines" (\n). Lacking this support, and seeing that an outstanding ticket already existed … Continue reading Deserializing Modsecurity Audit logs with Apache Flume
Logstash for ModSecurity audit logs
Recently had a need to take tons of raw ModSecurity audit logs and make use of them. Ended up using Logstash as a first stab attempt to get them from their raw format into something that could be stored in something more useful like a database or search engine. Nicely enough, out of the box, … Continue reading Logstash for ModSecurity audit logs
Dropwizard Java REST services
To sum it up; Dropwizard rocks. I've done quite a bit of WS development both the on client side and server side; interacting with both SOAP, REST and variants of XML/JSON RPC hybrid services. For my latest project I need to expose a set of REST services to a myriad of clients: phones, fat JS … Continue reading Dropwizard Java REST services
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