Do you ask yourself, “What is DNS?” “Do I need to use DNS?” Do you feel confused? In some cases, DNS can be convoluted and complicated. Let’s talk about Domain Name System (DNS) services. When you need to access a website, you type the domain name, such as www.google.com, into the web browser instead of typing an IP address. A conversion happens between www.google.com to 172.217.12.46, an IP, which designated to a device on the Internet. This conversion is a DNS query, an integral part of devices connecting with each other to communicate over the internet. To understand the DNS query process, let’s talk about how a DNS query routes…
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System Architecture of SAP Commerce Accelerator
Commerce Accelerator combines a feature-rich web application with a collection of software components that fulfill many typical use cases that are common requirements on a vast number of SAP Commerce implementation projects. This document helps you understand the software as well as understand in more detail the features implemented by the software, how everything fits together, and how you can adapt the code or configure it to fulfill your project's requirements.
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PowerShell in Action
PowerShell is a task-based command-line shell and scripting language built on .NET. PowerShell helps system administrators and power-users rapidly automate tasks that manage operating systems (Linux, macOS, and Windows) and processes. PowerShell commands let you manage computers from the command line.
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Integrating Solr with PHP
Solr has quickly become one of the most popular search engines available. Due to Solr’s many features and its low barrier to entry it can be an ideal candidate when seeking a search engine.
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Introducing Character Sets and Encoding
If you are dealing with text in a computer, you need to know about encodings. Period. Yes, even if you are just sending emails. Even if you are just receiving emails. You don't need to understand every last detail, but you must at least know what this whole "encoding" thing is about. And the good news first: while the topic can get messy and confusing, the basic idea is really, really simple.
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10 most tricky question in java
References https://www.journaldev.com/552/java-tricky-interview-questions https://hubpages.com/technology/10-most-tricky-question-in-java http://www.java67.com/2012/08/10-java-coding-interview-questions-and.html
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Introduction to Microservices
Microservices are a software development technique—a variant of the service-oriented architecture (SOA) architectural style that structures an application as a collection of loosely coupled services. In a microservices architecture, services are fine-grained and the protocols are lightweight. The benefit of decomposing an application into different smaller services is that it improves modularity. This makes the application easier to understand, develop, test, and become more resilient to architecture erosion. It parallelizes development by enabling small autonomous teams to develop, deploy and scale their respective services independently. It also allows the architecture of an individual service to emerge through continuous refactoring. Microservices-based architectures enable continuous delivery and deployment.
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How to design indexes
One of the most common reasons for performance issues in software applications is missing or incorrect database indexes, so the goal of this article is to provide an introduction to the concepts and real-world practice of indexing for developers.
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Parameter Sniffing
References https://hackernoon.com/why-parameter-sniffing-hurts-your-sql-query-performance-d73c0da71fbc https://blogs.technet.microsoft.com/mdegre/2011/11/06/what-is-parameter-sniffing/ https://www.mssqltips.com/sqlservertip/3257/different-approaches-to-correct-sql-server-parameter-sniffing/
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UTF-8 BOM and SEO: How to find, clean, and fix an invisible character in your robots.txt file
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