Last year(2020) on march when Leetcode has started a monthly challenge I decide to try myself in it. I wasn’t new to leetcode, already was trying to solve problems at least one per day. But it’s well-known fact that people get easily deflected from the original goal because of daily life routines and responsibilities. It is difficult to make it your responsibility to solve the problems in Leetcode, unless you work for leetcode. So I decided to go with other option make it my routine. Leetcode started monthly challenge which was good chance to make it my routine.
I would like to share my work experience at Kakaopage (Korea) as a developer. It is one of the top Software Companies in Korea and very good place to work as a developer (<– for TL;DRs)
Ionic is another cross-platform framework which allows to use web developers quickly build their mobile apps. Originally Ionic has been used angular-js as a front-end framework. But starting from Ionic-4, two other popular front-end frameworks (react and vue) can be used.
It is possible to get IP address range from the github according to this. But the issue is that IP addresses are changed every week, It means we have to do the update every week and handle those new IP addresses.
There are number of courses and guidances about how to pass one of the most popular exams: AWS Certified Solutions Architect Associate. AWS is one of the top cloud providers of our days, and having one of the AWS certificates (yeah there are many kinds) would only help in Your carrier. I personally not big fan of exams, because while preparing for exam you become obsessed to pass the exam and may simply start memorizing everything. I prefer study everything deeply, aws is the real rabbit-hole if you start digging deeply. In this short post would like to share my experience how did I prepare and passed AWS Solutions Architect Associate Exam.
In order to use AWS cloud resources from application we have to setup connection with specific account. AWS SDK is supported by dozens of programming languages and JAVA is one of them. In order to setup connection the concept of credential provider chain must be understood. There are multiple ways of using AWS Credential through the application (Example: Through environment variables, java system properties, web identity token, etc). AWS SDK allows us to use one or multiple of these ways together in order to setup connection. It means we can build a chain out of these possible ways and the chain works as a fallback. Means if the first way of connection fails, SDK will try the second way, and then third and so on.
The original definition of GitOps was taken from gitops.tech and it says that GitOps is a way of implementing Continuous Deployment for cloud native applications. It usually focused on developers who can easily setup CI/CD environments by using familiar tools such as Git and CD tools. There are common patterns for CI/CD setup, but each time when we setup new environment with CI/CD some customization is required. It is like, every our new project somehow similar with our previous project but not the same. We can say same thing about CI/CD process. In this article I would like to describe a GitOps setup which is used to deploy application to the kubernetes.
AWS DNA(Digitial Native Architects) program has been developed and introduced by DNB team of AWS Korea. They have selected 20 people from various IT companies who actively uses AWS Cloud. Shortly the goal of this program is to teach us how to use AWS as a pro. Five teams were formed out of 20 people, at the end of the course teams supposed to come up with they Case Study and Build-up a prototype that has a stable business model and could become a real startup in a future.
Gson Fire project contains very usefull additions to the Gson project, in order to keep your code organized and clean. Gson Fire is something that better to have, otherwise you have to implement JsonSerializer and JsonDeserializer interfaces and register TypeAdapter classes to run some additional behaviors in serialization and desirialization processes.
Rich domain model, much of the domain logic implemented within the entities at the core of the application. The entities provide methods to change state and only allow changes that are valid according to the business rules. Many of the business rules are located in the entities instead of the use case implementation.