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60 Seconds Architecture – Graphite Contents  TOC \o "1-3" \n \h \z \u Overview Data Graphite Components Carbon Whisper Carbon-Cache Carbon-Rely Web API Performance boost Clustering Graphite High Availability Open Issues with graphite Ramp Up Debugging Eat your own dog food Debugging techniques Multi tenet Events Overview...

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Guava FluentIterable is part of the Guava collections library. It has great similarity to the Java 8 stream API. This code filters a list with FluentIterable: from(cities).filter(city -> city.contains(“e”)).transform(city -> “‘”+city + “‘”).limit(2).join(on(” “)); And this one produces the same result with Java 8 stream API: cities.stream().filter(city -> city.contains(“e”)).map( city...

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A great blog to start with for tuning your ElasticSearch server http://www.elasticsearch.org/blog/performance-considerations-elasticsearch-indexing/

by rika
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   Beyond Java-JVM Event lectures Video & Slides Functional Programming with Java8, Scala & Clojure   Following the successful FullStack event with over 260 members, we are happy to share the slides and video's from the event. This event was about exploring the paradigm shift of Functional programming using JVM based languages Java8, Scala and Clojure. Read...

by olga
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I am going to talk about PostgreSQL, but the idea is the same for the whole spectrum of data bases.    Imagine that you would like to debug your staging machine which is deployed on Amazon and use an Amazon's DB service. In case of the well configured security level,...

by olga
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Case: You have an object Game with 'country' and 'timestamp' fields and you are looking for all games played in Germany between 12.05.2012 and 20.05.2014. And for some reason you would like to do so in memory without any DB. Lets say that the list of countries isn't huge and...

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Part of a system I currently working on is manipulating raw data. The data being sent from multiple client devices(Android/Iphone devices, etc..) ~ 100,000 requests per day. The raw data need to be collected and ready for later use. It gotta be searchable and aggregated for calculations. Read more at: http://www.javacodegeeks.com/2014/08/my-exprience-using-elasticsearch-nodejs-and-expressjs.html...

by yanai
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Thanks for all people who attended the meetup today. Here are the slides from "Functional Programming with Java 8" session:   Fp java8 from Yanai Franchi

by dmitri
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When you hear 'Big Data' and 'Analytics' in the same sentence it's usually about Storm and Hadoop. This time our team decided to take something different for a trial. The task We asked to become data scientiests for a day and analyze a large text file filled with tweets. We...

by yanai
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Abstract In our last Tikal Fuseday, we split into several groups to create data analytic applications. As in previous Fuseday, the idea was to learn and use lots of technologies, by creating a working “crash application” from scratch, developed in just a few hours of work. With our team we...