Working with webhooks in development

• 12th July 2017
• Vasilis Vontikakis
• webtech

When we develop complex applications, often we want to integrate third party web services such as payment gateways, sms apis and other. Some of them send messages (webhooks) back to our web application in future time, for example to update the status of a record. During development when we work in our local development machine it's difficult to interact with incoming requests from such services. One solution to simplify this task is to use an online http tunnel services such gronk which is one of the ways to expose our virtual host on public internet.

After we download install ngrok ...

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Blockchain technology and the smart contracts

• 9th June 2017
• Vasilis Vontikakis
• webtech

Blockchain is the technology that makes possible to store records in a public peer to peer network. This kind of technology allows someone to transfer the ownership on a piece of information to another user, the same time is preventing the replication from a third party. While a transaction begins, the system sign and pack it with other transactions that happened the last 10 minutes in the network, the packet of the transactions is called block. Every block has a timestamp and transmitted to the network for validation by multiple independent nodes ( the nodes are the miners, which provide ...

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Go Programming Language and how to install in Linux

• 17th January 2017
• Vasilis Vontikakis
• webtech

The Go is a programming language was created by Google it's similar to C and not an object oriented language, so a certain degree of simplicity exists . One of the advantages is a compiled type language which makes it faster than interpreted languages like Python. Also supports concurrent programming in language level through Go routines. This feature makes it very useful in networking and system level applications and also very popular in building microservices.

Let's install Go in our linux distribution, first we go to the official website https://golang.org for ...

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