Systems | Development | Analytics | API | Testing

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Introduction to Event Loop Utilization in Node.js

In the last year, I've spent many hours writing patches for libuv and Node to collect new metrics. The goal of this was to indirectly infer the state of the application without introducing measurable overhead. I've run a few hundred hours of benchmarks and collected over one million data points to make sure my analysis was correct. Eventually, I plan to write about all aspects of my research, but today we will focus on a metric that has already been added to Node.

Best website load testing services

Website load testing services determine how websites deal with online traffic. Too often, people equate it with performance testing. However, load testing is just a type of website performance testing. Other types of performance testing include endurance testing, volume testing, scalability testing, spike testing, and stress testing. In website deployment, it is common that transactions may fail and systems crash. It is due to concurrent demands on the website and adjustment over resources.

Achieve Pin-Point Historical Analysis of Your Salesforce Data

Want to look at how data has changed over time? Simply enable history mode, a Fivetran feature that data analysts can turn on for specific tables to analyze historical data. The feature achieves Type 2 Slowly Changing Dimensions (Type 2 SCD), meaning a new timestamped row is added for every change made to a column. We launched history mode for Salesforce in May and have been delighted with the response.

Testing without limits: xk6 and k6 extensions

k6 v0.29.0 introduced xk6 and k6 extensions to the k6 community. 🎁🎉💪 You can now extend the functionality of k6 using Go-based k6 extensions and import them as JS modules in your k6 script. This feature opens the gates for anyone to use existing k6 extensions and write custom Go extensions for special requirements. Before this release, importing JavaScript libraries was the only possibility to extend k6.

Python Memory Management: The Essential Guide

Python is not known to be a "fast" programming language. However, according to the 2020 Stack Overflow Developer Survey results, Python is the 2nd most popular programming language behind JavaScript (as you may have guessed). This is largely due to its super friendly syntax and its applicability for just about any purpose.

"Hello, Ruby Debugging"

Learning a new language is always a joyous event. From the first innocent google search, through the first “hello world”, to always being surprised when the classic text is somehow printed to the screen/command line console/browser tab/local text file. The entire time your mind is quickly soaking in new ideas and concepts, new syntax and phrases, and new ways of doing things. Some of them can be compared to the languages you already know. Others are brand new.

Fivetran vs. MuleSoft vs. Xplenty : An ETL Comparison

The key differences between Fivetran, MuleSoft, and Xplenty: Hiring a data scientist or engineer can cost up to $140,000 per year —something many businesses can't afford. Still, organizations need to pull data from different locations into a data lake or warehouse for business insights. An Extract, Transform, and Load (ETL) platform makes this process easier, but few organizations have the technical or coding know-how to make it happen.

Moving Big Data and Streaming Data Workloads to AWS

Cloud migration may be the biggest challenge, and the biggest opportunity, facing IT departments today - especially if you use big data and streaming data technologies, such as Cloudera, Hadoop, Spark, and Kafka. In this 55-minute webinar, Unravel Data product marketer Floyd Smith and Solutions Engineering Director Chris Santiago describe how to move workloads to AWS EMR, Databricks, and other destinations on AWS, fast and at the lowest possible cost.