Showing posts with label Web Server. Show all posts

Friday, 29 January 2021

Web Server Vs. API Server | API Tutorial | Web Services Tutorial

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Web Server vs. API Server: The Ultimate Comparison

In the world of backend development, you'll often hear the terms "Web Server" and "API Server" used interchangeably, but they serve very different purposes. Understanding this distinction is vital for anyone building modern applications.

What is a Web Server?

A Web Server's primary job is to serve User Interface (UI). When you type a URL into your browser, the Web Server sends back HTML, CSS, and JavaScript files that your browser renders into a beautiful website. It is designed for humans to interact with.

What is an API Server?

An API Server, on the other hand, is designed for machines to interact with. It doesn't send back pretty layouts; instead, it sends raw data, usually in JSON or XML format. It handles the logic and data processing that powers the front-end application.

Key Differences at a Glance

1. Content Type

Web servers focus on static and dynamic content for browsers (HTML). API servers focus on data-driven content for applications (JSON/XML).

2. Target Audience

Web servers are for people browsing the web. API servers are for other software, mobile apps, or even other servers.

3. Interaction Style

Web servers provide a full visual experience. API servers provide a "headless" experience where only the raw data matters.

Most modern apps actually use both! A web server delivers the initial page, and then that page makes requests to an API server to fetch updated data. Watch the video above for a deep dive into how they work together!

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Thursday, 8 August 2019

Spring boot - How to configure Jetty Server option programmatically? | Spring Boot tutorial

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How to Configure Jetty in Spring Boot

While Tomcat is the default web server for Spring Boot, many developers prefer Jetty for its lightweight nature and high performance in specific cloud environments. In this guide, we'll walk through how to switch to Jetty and configure its options like a professional.

Step 1: Switching to Jetty

The first thing you need to do is exclude the default Tomcat starter and include the Jetty starter in your pom.xml file. This tells Spring Boot to use Jetty as the embedded servlet container.

Step 2: Configuring Server Options

Once Jetty is active, you can customize it using the application.properties file. You can control everything from the port number to advanced thread pool settings.

# Change the server port
server.port=8081

# Jetty specific configurations
server.jetty.threads.max=200
server.jetty.threads.min=10
server.jetty.threads.idle-timeout=60s

Why Choose Jetty?

Jetty is often praised for being more efficient with memory and having a smaller footprint than Tomcat. It is an excellent choice for microservices where resource optimization is key.

Explore More Spring Boot Tips

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Saturday, 27 July 2019

How to install Tomcat 9 in windows operating system? | Tomcat 9 Installation | Tomcat

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The Easy Way to Install Tomcat 9 on Windows

Apache Tomcat 9 is a powerful, open-source web server used by millions of developers to host Java-based web applications. While it might seem technical, installing it on Windows is actually quite simple when you follow the right steps. This guide will get your local server up and running in no time.

Step 1: Verify Java Installation

Before you even download Tomcat, you must have the Java Development Kit (JDK) installed on your Windows machine. Tomcat is written in Java and requires it to run. Open your Command Prompt and type java -version to make sure you're ready to go.

Step 2: Download the Tomcat 9 Installer

Head over to the official Apache Tomcat 9 download page. For Windows users, the easiest option is the "32-bit/64-bit Windows Service Installer" (the .exe file). This installer handles most of the configuration for you automatically.

Step 3: Run the Setup Wizard

Launch the downloaded installer and follow the prompts. During setup, you can choose which components to install (like the Manager GUI). You'll also be asked to specify the port—the default is usually 8080. Keep this in mind for later!

Step 4: Configure the Java Path

The installer will ask for the location of your JRE or JDK. It usually finds this automatically, but double-check that it points to the correct folder (e.g., C:\Program Files\Java\jdk-11) so Tomcat can launch without errors.

Step 5: Start and Test Your Server

Once the installation is complete, you can start the Tomcat service. Open your browser and go to http://localhost:8080. If you see the famous Tomcat "If you're seeing this, you've successfully installed Tomcat" page, congratulations! You're ready to deploy your apps.

More Essential Server Guides:

Thursday, 13 June 2019

How to change the default port in spring boot application programmatically? | Spring Boot tutorial

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Changing the Spring Boot Port Programmatically

By default, Spring Boot applications start on port 8080. While changing this in a properties file is common, there are many scenarios—like building dynamic microservices—where you might need to change it directly in your Java code. This guide makes it simple!

Why Change the Port in Code?

Setting the port programmatically gives you ultimate control. You can calculate the port at runtime, read it from a database, or even find an available port automatically. This is especially useful for developers running multiple local instances of the same service.

The Main Methods

There are two primary ways to handle this in your Spring Boot project:

Using WebServerFactoryCustomizer: This is the modern, flexible way to customize the server. You create a component that tells Spring exactly how to configure the embedded server before it starts.
Using System Properties: You can set the port within your main method before calling SpringApplication.run(). It’s a quick and dirty way to override settings globally.

Beginner Tip: Keep it Dynamic

If you're worried about port conflicts, you can set the port to 0. This tells Spring Boot to find any randomly available port on your machine. It’s a great trick for integration testing or when you don't want to manually manage port numbers!

Remember: Any changes made programmatically will typically override what is written in your application.properties file.

Continue Your Spring Boot Journey

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Wednesday, 15 July 2015

Apache Server : Apache Server Installation (Windows OS)

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How to Install Apache HTTP Server on Windows Operating System

The Apache HTTP Server is one of the most widely used, open-source web servers in the world. Whether you are setting up a local web development environment, hosting static websites, or testing web applications, installing Apache on Windows is a fundamental skill for developers and system administrators.

1. Prerequisites for Apache Installation

Before starting the installation on Windows, ensure the following requirements are met:

Windows OS: Windows 10, Windows 11, or Windows Server edition.
Administrator Privileges: An account with administrator rights to configure Windows services and system ports.
Visual C++ Redistributable: The appropriate Microsoft Visual C++ Redistributable package installed for running Apache binaries on Windows.
Port Availability: Ensure default port 80 (or an alternate port like 8080) is not occupied by other services like IIS or Skype.

2. Step-by-Step Installation Process

Follow these key steps to set up Apache Server on your Windows environment:

Download Binaries: Download the latest stable Apache binary zip archive for Windows (e.g., from Apache Lounge or official distribution mirrors).
Extract Directory: Extract the downloaded archive directly to your preferred root path (commonly C:\Apache24).
Configuration File: Open conf/httpd.conf in a text editor to verify the ServerRoot and adjust the port number or ServerName if necessary.
Install as a Windows Service: Open Command Prompt as Administrator, navigate to the bin folder, and register the service using httpd.exe -k install.

3. Starting and Verifying Apache Server

Once installed, verify that the server is active and serving content:

Start the Service: Start the server via the command prompt with httpd.exe -k start or using the Windows Services manager (services.msc).
Browser Verification: Open your web browser and navigate to http://localhost (or http://localhost:8080 if configured with an alternate port).
Success Response: A default page displaying "It works!" confirms that your Apache HTTP Server is running properly.

4. Key Maintenance & Troubleshooting Tips

Keep these practical guidelines in mind when managing your local Apache server:

Port Conflicts: If the service fails to start, check the logs/error.log file to verify if port 80 is conflicting with another service.
Document Root: Place your HTML, CSS, or application assets inside the htdocs folder to serve them locally.
Graceful Restarts: Use httpd.exe -k restart after editing configuration files without having to completely stop and recreate the service.

Click here to watch on YouTube:
https://www.youtube.com/watch?v=nZL32NL2SyY&list=UUhwKlOVR041tngjerWxVccw

Click here to download Apache Server:
http://httpd.apache.org/download.cgi

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Apache Server : Apache Installation (Windows OS)

Saturday, 29 March 2014

Servlets : Webserver vs Application Server

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Web Server vs. Application Server

One of the most frequent points of confusion for backend developers is distinguishing between a Web Server and an Application Server. While both process incoming network requests and deliver content back to clients, they serve fundamentally different roles across enterprise architecture.

In this guide, unpack the key architectural differences, supported protocols, execution environments, and popular industry examples.

Core Differences at a Glance

Feature	Web Server	Application Server
Primary Function	Delivers static web content (HTML, CSS, images).	Executes business logic, generates dynamic content.
Protocols	Primarily HTTP and HTTPS.	HTTP/S, RMI, IIOP, JMS, and RPC protocols.
Technologies	Static files, reverse proxying, URL redirection.	Servlets, JSPs, EJB, JPA, JMS transactions.
Examples	Apache HTTP Server, Nginx, Microsoft IIS.	Apache Tomcat (Servlet container), WildFly, WebLogic.

How They Work Together

In real-world enterprise architectures, web servers and application servers typically complement each other rather than compete:

The Web Server (e.g., Nginx) acts as the front-facing reverse proxy and load balancer, rapidly delivering static assets and terminating SSL/TLS.
Requests requiring business computations or database persistence are forwarded to the Application Server (e.g., Tomcat), which executes the Java Servlet lifecycle and passes the response back.

Recommended Next Watch

Continue mastering Java web development fundamentals with these lessons:

Click here to watch in Youtube : https://www.youtube.com/watch?v=WkaLSZ888as

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Webserver vs Application Server

Servlets : Webserver

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What is a Web Server?

A Web Server is software (and the underlying hardware) that stores, processes, and delivers web pages to Internet clients—most commonly web browsers. It operates primarily over the HTTP (Hypertext Transfer Protocol) and HTTPS protocols to fulfill client requests across the World Wide Web.

Whether serving static HTML pages, CSS stylesheets, images, or forwarding dynamic requests to servlet containers, understanding how a web server operates is essential for every web developer.

How a Web Server Works

Listens on a Port: A web server binds to network ports (standard port 80 for HTTP or 443 for HTTPS) waiting for incoming requests.
Accepts Connection & Parses Request: When a user types a URL or clicks a link, the browser opens a TCP connection and sends an HTTP request specifying the resource path and method (e.g., GET /index.html).
Locates Resource: The web server searches its document root directory for the matching file or evaluates request routing rules.
Sends HTTP Response: If found, the server transmits an HTTP response header (such as 200 OK) along with the content payload. If not found, it returns an error status code like 404 Not Found.

Popular Web Servers

Apache HTTP Server: One of the most mature, flexible, and open-source web servers in computing history.
Nginx: High-performance, event-driven web server often used as an HTTP cache and reverse proxy.
Microsoft IIS: Enterprise web server integrated tightly with Windows Server environments.

Recommended Next Watch

Continue expanding your knowledge of servers and Java web architecture with these tutorials:

Click here to watch in Youtube : https://www.youtube.com/watch?v=ZY6SO-qeb08

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Webserver

Sunday, 2 March 2014

Servlets Introduction

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What is a Java Servlet?

A Java Servlet is a server-side Java program that runs inside a Web Container (such as Apache Tomcat) to handle incoming client requests and generate dynamic web responses.

Before Servlets became standard, web servers handled dynamic content primarily using CGI (Common Gateway Interface) scripts. Servlets replaced CGI by introducing high-performance, robust, and platform-independent request processing powered by the Java Virtual Machine.

Why Every Java Developer Needs to Know Servlets

Even if modern Java developers frequently build applications using higher-level frameworks like Spring MVC or Spring Boot, understanding Servlets remains essential:

The Backbone of Web Frameworks: Underneath Spring Boot and Spring MVC, the entire request lifecycle is handled by the DispatcherServlet, which is fundamentally a Java Servlet.
Mastering the Request-Response Cycle: Servlets teach you firsthand how HTTP protocols, request parsing, headers, cookies, and session management actually function.
Debugging Confidence: When debugging filters, interceptors, authentication flows, or connection issues in enterprise web applications, servlet-level knowledge makes troubleshooting straightforward.

Key Advantages of Java Servlets

High Performance (Multi-Threading): Unlike traditional CGI scripts that spawned an entirely new operating system process for each incoming request, a servlet container creates a lightweight Java thread per request.
Platform Independence: Write once, run on any operating system supporting a compliant Java Servlet container.
Security & Robustness: Benefit directly from Java's built-in memory management, exception handling, and JVM type safety.
Extensibility: Integrate seamlessly with enterprise Java features such as JDBC, JTA, and connection pooling.

How a Servlet Request Lifecycle Works

When a browser triggers a URL mapped to your servlet:

The container checks if the servlet is already loaded; if not, it instantiates the class and calls init().
For every client hit, a separate thread invokes the service() method.
The servlet constructs dynamic content (HTML, JSON, XML) and writes it into the HttpServletResponse output stream.
When shutting down, the container triggers destroy() to release active resources.

Friday, 29 January 2021

🚀 Skyrocket Your Tech Knowledge!

Web Server vs. API Server: The Ultimate Comparison

What is a Web Server?

What is an API Server?

Key Differences at a Glance

1. Content Type

2. Target Audience

3. Interaction Style

Discover More from Ram N Java:

Thursday, 8 August 2019

🚀 Boost Your Java Career!

How to Configure Jetty in Spring Boot

Step 1: Switching to Jetty

Step 2: Configuring Server Options

Why Choose Jetty?

Explore More Spring Boot Tips

Saturday, 27 July 2019

The Easy Way to Install Tomcat 9 on Windows

Step 1: Verify Java Installation

Step 2: Download the Tomcat 9 Installer

Step 3: Run the Setup Wizard

Step 4: Configure the Java Path

Step 5: Start and Test Your Server

More Essential Server Guides:

Thursday, 13 June 2019

🎯 Never Miss a Java Hack!

Changing the Spring Boot Port Programmatically

Why Change the Port in Code?

The Main Methods

Beginner Tip: Keep it Dynamic

Continue Your Spring Boot Journey

Wednesday, 15 July 2015

How to Install Apache HTTP Server on Windows Operating System

1. Prerequisites for Apache Installation

2. Step-by-Step Installation Process

3. Starting and Verifying Apache Server

4. Key Maintenance & Troubleshooting Tips

See also:

Saturday, 29 March 2014

🚀 Master Java & Servlets with Ram N Java!

Web Server vs. Application Server

Core Differences at a Glance

How They Work Together

Recommended Next Watch

🚀 Master Java & Servlets with Ram N Java!

What is a Web Server?

How a Web Server Works

Popular Web Servers

Recommended Next Watch

Sunday, 2 March 2014

🚀 Master Java Web Development!

What is a Java Servlet?

Why Every Java Developer Needs to Know Servlets

Key Advantages of Java Servlets

How a Servlet Request Lifecycle Works

Recommended Related Tutorials

Tutorials