Java with The Best Conference

Do you believe that Java is dead? Please join the Java with the Best online conference on April 17th-18th and then probably you will change your mind. Of course if you are a Java technology passionate you need to attend as well ;) 2 days, 50 talks, 3 parallel sessions (Core Java, Big Data, Machine Learning and Cloud Development with Java, Java Frameworks, Libraries and Languages). I hope you will get a chance to attend my talk:

Comments

Load testing MongoDB using JMeter

Apache JMeter ( http://jmeter.apache.org/ ) added support for MongoDB since its 2.10 release. In this post I am referring to the latest JMeter release (2.13). A preliminary JMeter setup is needed before starting your first test plan for MongoDB. It uses Groovy as scripting reference language, so Groovy needs to be set up for our favorite load testing tool. Follow these steps to complete the set up: Download Groovy from the official website ( http://www.groovy-lang.org/download.html ). In this post I am referring to the Groovy release 2.4.4, but using later versions is fine. Copy the groovy-all-2.4.4.jar to the $JMETER_HOME/lib folder. Restart JMeter if it was running while adding the Groovy JAR file. Now you can start creating a test plan for MongoDB load testing. From the UI select the MongoDB template ( File -> Templates... ). The new test plan has a MongoDB Source Config element. Here you have to setup the connection details for the database to be tested: The Threa...

Turning Python Scripts into Working Web Apps Quickly with Streamlit

I just realized that I am using Streamlit since almost one year now, posted about in Twitter or LinkedIn several times, but never wrote a blog post about it before. Communication in Data Science and Machine Learning is the key. Being able to showcase work in progress and share results with the business makes the difference. Verbal and non-verbal communication skills are important. Having some tool that could support you in this kind of conversation with a mixed audience that couldn't have a technical background or would like to hear in terms of results and business value would be of great help. I found that Streamlit fits well this scenario. Streamlit is an Open Source (Apache License 2.0) Python framework that turns data or ML scripts into shareable web apps in minutes (no kidding). Python only: no front‑end experience required. To start with Streamlit, just install it through pip (it is available in Anaconda too): pip install streamlit and you are ready to execute the working de...

Evaluating Pinpoint APM (Part 1)

I started a journey evaluating Open Source alternatives to commercial New Relic and AppDynamics tools to check if some is really ready to be used in a production environment. One cross-platform Application Performance Management (APM) tool that particularly caught my attention is Pinpoint . The current release supports mostly Java applications and JEE application servers and provides support also for the most popular OS and commercial relational databases. APIs are available to implement new plugins to support specific systems. Pinpoint has been modeled after Google Dapper and promises to install agents without changing a single line of code and mininal impact (about 3% increase in resource usage) on applications performance. Pinpoint is licensed under the Apache License, Version 2.0 . Architecture Pinpoint has three main components: - The collector: it receives monitoring data from the profiled applications. It stores those information in HBase . - The web UI: the f...

Googlielmo's blog

Search This Blog