David Koller - The Awesome Code Blog

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David Koller

Senior Software Engineer | IT Architect

How to profile a Go application with pprof

Step 1 Install dependencies: apt-get install graphviz gv or brew install graphviz Step 2 Download pprof to your application go get -u github.com/google/pprof Step 3 Import pprof to your application import _ "net/http/pprof" Step 4 Add pprof server to application e.g. main.go package main

Golang Mockery - Mock Function with multiple return values

Golang Mockery - Mock Function with multiple return values

If you've ever written a test in golang, you may used the testify [https://github.com/stretchr/testify] package. An immensely useful extension of that is the mockery [https://github.com/vektra/mockery] package, which gives you the ability to autogenerate mocks for interfaces with ease. In most cases, you'll

Kubernetes pod as a Bastion Host - Access private database

Kubernetes pod as a Bastion Host - Access private database

In Cloud Native environment private networks, databases and services are best practice. An infrastructure should be fully private and only a limited number of entry points can be available. Important: Obviously the more restricted the better. Still there are cases where you have to access infrastructure components from your private

Macbook Wifi not working- How to fix Wi-Fi on Mac

Macbook Wifi not working- How to fix Wi-Fi on Mac

Solution 1 Use the 5GHz band or change your position 1) reduce distance to your router or change your routers location 2) If your router support 5GHz band, change router configuration (check your router setting) 3) sometimes it helps changing your Wi-Fi channel or Wi-Fi name, because your neighbours are

Sicherheitsrisiken in der E-Mobilität

Sicherheitsrisiken in der E-Mobilität

IT-Sicherheit und Standards der Ladeinfrastruktur GRIN - Sicherheitsrisiken in der E-Mobilität. IT-Sicherheit und Standards der LadeinfrastrukturSicherheitsrisiken in der E-Mobilität. IT-Sicherheit und Standards der Ladeinfrastruktur - Angriffsvektoren und Maßnahmen - David Koller - Forschungsarbeit - Informatik - IT-Security - Arbeiten publizieren: Bachelorarbeit, Masterarbeit, Hausarbeit oder DissertationGRINDavid Koller (Autor) [https://www.grin.

Send an email using only JavaScript - no backend

Send an email using only JavaScript - no backend

While creating a lot of websites for small businesses I recognized the pain that only a single webserver will be used (based on costs) and at most HTML skills are available. But to provide a contact form, a backend solution and a mail server is necessary. Therefore I need an

How to track Ionic Apps with Google Analytics - no cordova plugin

How to track Ionic Apps with Google Analytics - no cordova plugin

In Short: You will learn how to add Google Analytics without cordova plugin and track page transitions and your own events Pre-Condition: You have created a Google Analytics account and also have registered a website based project for your ionic app. Also you have extracted your Tracker Id from your

How to create a Excel file in Ionic apps using PouchDB

How to create a Excel file in Ionic apps using PouchDB

In Short: You will learn how to create a Excel file based on data from PouchDB. Pre-Condition: For creating a PouchDB instance and inserting data, check out the following tutorial: Ionic 5 Background Geolocation Tracking with PouchDBStep 1Create a new Ionic project. npm install -g ionic@latestionic start ionic4-background-geo-pouchdb blank

How to create a PDF file in Ionic apps using PouchDB

How to create a PDF file in Ionic apps using PouchDB

In Short: You will learn how to create a PDF file based on data from PouchDB and print the file with cordova-plugin-printer. Pre-Condition: For creating a PouchDB instance and inserting data, check out the following tutorial: Ionic 5 Background Geolocation Tracking with PouchDBStep 1Create a new Ionic project. npm install

How to search YouTube videos without API key in Ionic

How to search YouTube videos without API key in Ionic

How it works Step 1 Create an ionic angular app or use an existing one. We will create a new one using the "tabs" template. ionic start myApp tabs Step 2 Install the following dependencies ionic cordova plugin add cordova-plugin-advanced-http npm install ionic-youtube-search --save https://www.npmjs.com/package/ionic-youtube-search

How to stream YouTube videos in Ionic

How to stream YouTube videos in Ionic

How it works Step 1 Create an ionic angular app or use an existing one. We will create a new one using the "tabs" template. ionic start myApp tabs Step 2 Install the following dependencies ionic cordova plugin add cordova-plugin-advanced-http ionic cordova plugin add cordova-plugin-streaming-media npm install ionic-youtube-streams --save npm

IonPush - Live Deploy Updates for Ionic apps

IonPush - Live Deploy Updates for Ionic apps

IonPush [https://ionpush.appit-online.de] allows us to publish changes and hot updates to our hybrid mobile applications without recompile the app and resubmit to app stores review process. This is very useful for publishing bug fixes, integrate A/B tests, changes of your UI/UX, content or business logic

Sicherheit und Privatsphäre im Web.

Sicherheit und Privatsphäre im Web.

Client/Server-Kommunikation mittels Browser, HTTP-Header und Proxys GRIN - Sicherheit und Privatsphäre im Web. Client/Server-Kommunikation mittels Browser, HTTP-Header und ProxysSicherheit und Privatsphäre im Web. Client/Server-Kommunikation mittels Browser, HTTP-Header und Proxys - David Koller - Technischer Bericht - Informatik - IT-Security - Arbeiten publizieren: Bachelorarbeit, Masterarbeit, Hausarbeit oder DissertationGRINDavid

Background Geolocation Tracking with Ionic 5+ PouchDB

Background Geolocation Tracking with Ionic 5+ PouchDB

Step 1 Create a new Ionic project. npm install -g ionic@latest ionic start ionic4-background-geo-pouchdb blank Step 2 Install plugin and dependencies. // geolocation tracking ionic cordova plugin add @mauron85/cordova-plugin-background-geolocation npm install --save @ionic-native/background-geolocation // sqlite as storage without limits ionic cordova plugin add cordova-sqlite-storage npm install @ionic-native/sqlite // pouchDB

Install Ghost Blog on IIS

Install Ghost Blog on IIS

Pre Condition Ghost's current recommended Node version is Node v10 LTS. Also 8.x (Node v8 Carbon LTS) is supported IISNode is installed, including IIS URL Rewrite Module First of all, we need to install the ghost CLI: npm install -g ghost-cli@latest Create a new empty folder mkdir ghost