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Machine Learning

Machine learning – how to

Machine learning is widely and successfully used nowadays. We think that computers know, but actually, they do not know – they compute. All they do […]
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Backend Front-end Microservices

gRPC over HTTP/2 or: How I learned to stop depending on REST and love gRPC

In today buzzword-oriented world, you don’t spend all of your precious time following all of the latest technologies. When creating APIs, you rarely think twice […]
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Python

Python Good Practices: Part 1 – Python constructs

Python has many powerful and useful constructs. Depending on their design, they help us to write code safer, more readable, often faster and with lower […]
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Databases

Visualizing Influx metrics with Grafana

Grafana is a data visualization and monitoring tool allowing you to show metrics stored for example in InfluxDB as charts. It gives you possibility to […]
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Python Quality Assurance

Mocking objects with Python

Mocking is just pretending to be and simulating specific behavior, we can replace our code’s parts with fake objects and verify how system behaves. At […]
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Java Quality Assurance

Introduction to performance tests using JMeter

JMeter is an open-source JAVA-based load testing tool for measuring and analyzing performance of services and applications. It simulates user behavior by sending requests to […]
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Databases

Using InfluxDB to store performance metrics

InfluxDB it is a database oriented on time series. It was designed to accept large number of queries and write requests. It is perfect for […]
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Python Quality Assurance

Pytest – why it’s more popular than unittest?

In my professional career I used to write tests with both frameworks: unittest and pytest. Both are great tools with certain pros and cons, but pytest is significantly more popular […]
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Java Quality Assurance

Parametrized tests – solutions overview (TestNG, JUnit4, JUnit5)

Parametrized tests are a lot easier to maintain. Usually when single requirement changes it’s enough to change one variable in the code. You don’t have […]
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Quality Assurance Front-end

How to make Nigthwatch.js library work with async/await?

Although it’s quite powerful tool, you need to customize it to get the full benefit of it. One of these improvements is usage of async/await commands (from […]
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