How we solved a case where IndexedDB did not connect

How we solved a case where IndexedDB did not connect

We encountered an issue where IndexedDB did not connect, this is how we solved it.

Advice for support engineers handling customer escalations

Advice for support engineers handling customer escalations

In my role as a technical support engineer, I have seen all manner of escalations. They can come in the form of; A performance bug in the productA corner case issue you wouldn't consider a user hitting a service being offline that the product depends onA third party library the product depends on being upgraded many more! From a support engineer's perspective, here are a few tips I have learned over the years on how to approach an escalation.

Traps to avoid when dealing with time critical issues

Traps to avoid when dealing with time critical issues

All Developers/Operations team members know the pressure and stress of finding and fixing a critical issue in their code or infrastructure. When dealing with issues, they often enter panic mode to try and get the issue resolved as soon as possible. While this can yield positive results, it can also lead to mistakes. Two frequent traps we fall into when in panic mode are: The quick fix - you cut some corners so that everything starts working again, promising to fix those tests or perform that extra step laterMaking too many changes - you implement several fixes at once, then have to figure out what change fixed the issue

Multithreading and Multiprocessing

Multithreading and Multiprocessing

Many programming languages allow for multithreading and multiprocessing as a means of parallel execution of code. This form of programming allows for tasks to be split into groups of tasks that can be executed concurrently. This can lead to faster execution times for tasks that are not blocked by other operations. There are however several advantages and disadvantages to this form of programming.Multithreading and Multiprocessing can allow for better performance when executing certain operations. There are many different forms of multithreading and multiprocessing implementations, it is important to know the limitations of each implementation and to consider such things as: number of processors (or threads) that are available when the code is runningthe duration and number of tasks that are being executed

Getting started with nerd.vision in Python

Getting started with nerd.vision in Python

The python agent for nerd.vision has left early access, version 1.0.0 is officially released!‍In this blog, we are going to guide you through setting up and using nerd.vision with your python application.

Debugging local projects with nerd.vision

Debugging local projects with nerd.vision

I've found an issue in development. Let’s use the nerd.vision debugger with the project on my computer to see what could be wrong.

Python vs. Java: When to use which

Python vs. Java: When to use which

Java and Python are high-level programming languages based on Object-oriented paradigm. But which is better for each situation?

Developer issues when working in containers

Developer issues when working in containers

Containers are fast becoming an adapted technology in computing today. But they aren't a magical fix for all issues.

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Traps to avoid when dealing with time critical issues

Traps to avoid when dealing with time critical issues

All Developers/Operations team members know the pressure and stress of finding and fixing a critical issue in their code or infrastructure. When dealing with issues, they often enter panic mode to try and get the issue resolved as soon as possible. While this can yield positive results, it can also lead to mistakes. Two frequent traps we fall into when in panic mode are: The quick fix - you cut some corners so that everything starts working again, promising to fix those tests or perform that extra step laterMaking too many changes - you implement several fixes at once, then have to figure out what change fixed the issue

Why debug in production?

Why debug in production?

A selection of common question about debugging in production.

The future of nerd.vision

The future of nerd.vision

What is happening next in nerd.vision? You decide.

Configuring nerd.vision to automatically run in Docker

Configuring nerd.vision to automatically run in Docker

A guide to configuring nerd.vision to automatically run when your Docker container starts.

Using conditional breakpoints to fix a bug

Using conditional breakpoints to fix a bug

An example using conditional breakpoints to find a corner case in our test application.

Getting started with nerd.vision for Java applications

Getting started with nerd.vision for Java applications

By following the steps in this blog post you will be able to install and configure nerd.vision so you are able to debug your Java application.

Configuring nerd.vision to automatically run in Docker

Configuring nerd.vision to automatically run in Docker

A guide to configuring nerd.vision to automatically run when your Docker container starts.

Installation and configuration instruction video for nerd.vision

Installation and configuration instruction video for nerd.vision

You can see how to install and configure nerd.vision in our useful video we also have details and code in our getting started with nerd.vision blog.

Debugging local projects with nerd.vision

Debugging local projects with nerd.vision

I've found an issue in development. Let’s use the nerd.vision debugger with the project on my computer to see what could be wrong.

Getting started with nerd.vision in Node.js applications

Getting started with nerd.vision in Node.js applications

A quick guide to getting nerv.vision up and running in Node.js

Getting started with Node.js? How to debug your first Node.js application

Getting started with Node.js? How to debug your first Node.js application

Are you getting started with Node.js? What is the best way to debug your node apps?

Getting started with nerd.vision for Java applications

Getting started with nerd.vision for Java applications

By following the steps in this blog post you will be able to install and configure nerd.vision so you are able to debug your Java application.

Advice for support engineers handling customer escalations

Advice for support engineers handling customer escalations

In my role as a technical support engineer, I have seen all manner of escalations. They can come in the form of; A performance bug in the productA corner case issue you wouldn't consider a user hitting a service being offline that the product depends onA third party library the product depends on being upgraded many more! From a support engineer's perspective, here are a few tips I have learned over the years on how to approach an escalation.

Using conditional breakpoints to fix a bug

Using conditional breakpoints to fix a bug

An example using conditional breakpoints to find a corner case in our test application.

How we solved a case where IndexedDB did not connect

How we solved a case where IndexedDB did not connect

We encountered an issue where IndexedDB did not connect, this is how we solved it.

Multithreading and Multiprocessing

Multithreading and Multiprocessing

Many programming languages allow for multithreading and multiprocessing as a means of parallel execution of code. This form of programming allows for tasks to be split into groups of tasks that can be executed concurrently. This can lead to faster execution times for tasks that are not blocked by other operations. There are however several advantages and disadvantages to this form of programming.Multithreading and Multiprocessing can allow for better performance when executing certain operations. There are many different forms of multithreading and multiprocessing implementations, it is important to know the limitations of each implementation and to consider such things as: number of processors (or threads) that are available when the code is runningthe duration and number of tasks that are being executed

Python vs. Java: When to use which

Python vs. Java: When to use which

Java and Python are high-level programming languages based on Object-oriented paradigm. But which is better for each situation?

Developer issues when working in containers

Developer issues when working in containers

Containers are fast becoming an adapted technology in computing today. But they aren't a magical fix for all issues.

X-Real-IP with docker swarm and TCP LB

X-Real-IP with docker swarm and TCP LB

Recently we changed to use an AWS NLB so we could use gRPC and HTTP/2 all the way to the microservices that answer the requests. X-Real-IP was missing though.

NoSuchAlgorithmException when using PowerMockito

NoSuchAlgorithmException when using PowerMockito

Today I encounter an issue with PowerMockito, this is how I fixed it.

MonogDB replication loop

MonogDB replication loop

After adding some new nodes to our MongoDB sharded cluster, the replication got stuck in the Startup2 phase. This is the simple fix.

The Importance of Monitoring Entropy

The Importance of Monitoring Entropy

Why entropy is important and how we solved the issue of our servers not having enough.

Debugging in containerized environments

Debugging in containerized environments

Debugging in a containerized environment is entirely safe with few exceptions in production environments.

Why debug in production?

Why debug in production?

A selection of common question about debugging in production.

Missing Python.h file when installing nerd.vision

Missing Python.h file when installing nerd.vision

Python.h: No such file or directory. Install python-dev via apt or yum.

Non-intrusive debugging for any environment

Debug applications throughout the development lifecycle with a single tool, wherever they are hosted