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Download IT Guides!   JMeter Tutorial JMeter is an application that offers several possibilities to configure and execute load, performance and stress tests using different technologies and protocols. It allows simulating different type of requests against all kind of databases, FTP, HTTP, HTTPS or other kind of servers. Originally JMeter was designed to test web applications, but its functionality has expanded and nowadays allows testing against almost any kind of program and can be used to perform functional tests in your applications..      Java Design Patterns A design pattern is a general reusable solution to a commonly occurring problem within a given context in software design. A design pattern is not a finished design that can be transformed directly into source or machine code. It is a description or template for how to solve a problem that can be used in many different situations. Patterns are formalized best practices that the programmer can use to solve common problems when designing an application or system.     Elasticsearch Tutorial Elasticsearch is a search engine based on Lucene. It provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. Elasticsearch is developed in Java and is released as open source under the terms of the Apache License. Elasticsearch is the most popular enterprise search engine followed by Apache Solr, also based on Lucene.     Docker  Cookbook Docker is the world's leading software containerization platform. Docker containers wrap a piece of software in a complete filesystem that contains everything needed to run: code, runtime, system tools, system libraries, anything that can be installed on a server. This guarantees that the software will always run the same, regardless of its environment. Docker provides an additional layer of abstraction and automation of operating-system-level virtualization on Linux.