Docker healthcheck

Configuration and examples

Author: Mateusz Buczkowski

09.2020

Docker healthcheck

One of the available Design & Config about Dockerfile introduces the most important commands for container definition. Few of these commands deserve a longer explanation. In this blog post, I will focus on Docker healthcheck. It allows us to monitor easily the status of the container.

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08.2020

Python REST frameworks performance comparison

Modern DevOps solutions allow us to scale the applications quickly. Scaling doesn’t always mean that we are slowly gaining customers and need to add more instances or servers. Scaling up can also happen periodically as the demand for our app might be higher in the evening or during the weekends.

07.2020

Routing order in aiohttp library in Python

In the Grandmetric development team, we regularly use the aiohttp library as our asynchronous HTTP client/server for Python. This D&C shows how to use and register request handlers in the aiohttp application. In particular, we would like to focus on paths order. That’s why you might find other solutions simplified for the sake of our […]

09.2019

How to adjust data to your needs in Elastic

Elastic Stack allows to use multiple data source. On the ingest-layer you can use Logstash, any of the Beats or custom app, which feeds Elasticsearch with the data through the API. Each of them can be customized or configured to some extent. In this blog post we will present how elastic can be configured to support data in format we want.

07.2019

Handling tickets with Kibana

There are multiple platforms that help you with handling tickets. If you are starting your business, you might simply reply to those emails directly via your mail client, but it quickly becomes too hard to follow and handle all the issues. We chose the tool, from the same vendor, we were already using for different purpose for easy integration. It was great for following threads, tagging and grouping issues, taking notes and automating responses. In this tool we had access to basic statistics like ticket count or time graph with incoming tickets, but we were interested in more advanced stats, which could give us more insight into what is going on. That’s why we decided to integrate that tool with already used by us Elastic Stack.

05.2019

IoT System: Monitoring and Management

IoT System consists of multiple devices and we expect each of them to work flawlessly. There are many reasons why the service might not work in such complex environment. Starting from physical damage of the device, power outage, up to network failure or software bug. Whatever the issue is, we want to be aware of it as soon as possible.

01.2019

Wi-Fi Generations – new naming convention for WiFi

Wi-Fi Generations affect not only new releases, but also refer to the past amendments. Currently Wi-Fi Alliance has defined 6 generations. Each step is significant improvement in network performance and security. No more minor version changes that can cause only confusion.

09.2018

Step in another direction in Wi-Fi? IEEE 802.11ax (High Efficiency WLAN)

The 802.11ax brings important features, focusing on network capacity, latency and range. High data rates are still in the picture, but rather in the background. Introducing OFDMA and using MU-MIMO allows AP to schedule data for multiple users simultaneously. This way, latency can be greatly decreased. With the new colors of the channels, frequencies can be spatially reused.

07.2018

How we ended up in WPA3? – Wi-Fi Security Evolution

Introduction to Wi-Fi Security Distributing data using wireless medium means that anyone can capture the signal. There is no boundary, like in case of cable communication, which prevents unwanted access. This means we must take other security measures. In this blogpost we will review current algorithms providing Wi-Fi security and we will take a sneak […]

05.2018

Wi-Fi Standards Evolution

Introduction First Wi-Fi networks appeared in late 90s and many of us use them ever since. During these years we could observe significant increase of throughput, but what is important, it is not only due to the ISP providing better link. Wi-Fi standard also evolved to keep up with the higher throughputs. If there will […]

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