A Beginner’s Guide to Software Development Life Cycle

Software development is a structured process that ensures quality, efficiency and security in creating applications. Software Development Life Cycle (SDLC) provides systematic access to software creation, ensuring that each phase is well-defined and performed. In this manual we explore SDLC step by step.

What is the life cycle of software development (SDLC)?

Life cycle of software development (SDLC) is a structured methodology used in software engineering for design, development, testing and deploying software applications. It ensures that the software meets customer expectations, maintains high quality and adheres to dates.

Key benefits:

• Reduces development time

• Improves the quality of the software

• Increases safety and compliance with regulations

• Ensures better project management

The Software Development Life Cycle (SDLC) at CodeRower follows a structured approach, including requirement analysis, planning, design, development, testing, deployment, and maintenance, ensuring high-quality, secure, and scalable software solutions tailored to business needs.

What are the Key Phases of SDLC?

The SDLC process consists of multiple phases, each of which plays a key role in successful software development.

1. Requirements Analysis

• Understanding to the needs of commercial needs

• Documentation of software requirements

• Identification of potential risks

2. Planning and Feasibility Studies

• Estimating time, cost and resources

• Selection of the right technology stack

• Ensuring the feasibility of the project

3. Design

• Creating software architecture

• Design of UI/UX prototypes

• Defining a database scheme

4. Development (coding)

• Writing and implementation of code

• After the coding standards

• Ensuring modular development

5. Testing

• Execution of units, integration and system testing

• Identification and correction of errors

• Performing security and performance tests

6. Deployment

• Publishing software in a living environment

• Server and database configuration

• Ensuring smooth deployment

7. Maintenance and Support

• Errors fixed after startup

• Software update to improve

• Provision of technical support

At CodeRower, the Software Development Life Cycle (SDLC) consists of requirement analysis, planning, design, development, testing, deployment, and maintenance. Each phase ensures seamless execution, security, and scalability, delivering high-quality software solutions tailored to business needs.

How is SDLC Implemented Using Code?

Let's take a look at the Agile SDLC model, focusing on the API development scenario in node.js with express.

Step 1: Define requirements

Call requirements before coding. Example:

{
  "Function": "Authentication of User",
  "Requirements": ["Registration", "Login", "JWT Token", "Hashing Passwords"]
}

Step 2: API structure

Define routes and middleware:

Const Express = require ("Express");
Const app = Express ();
App.USE (Express.json ());

app.post ("/register", (req, res) => {
  res.send ("registered user");
});

app.post ("/login", (req, res) => {
  res.send ("User login");
});

app.listen (3000, () => console.log ("server run on port 3000"));

Step 3: Development

Implementation User Verification with JWT and BCRYPT:

Const JWT = request ("JSONWEBTOKEN");
Const bcrypt = request ("bcrypt");

Const users = [];

app.post ("/register", async (req, res) => {
  Const HashedPassword = wait bcrypt.hash (req.Body.password, 10);
  users.push ({usename: req.Body.userName, password: hashedpassword});
  res.status (201) .send ("registered user");
});

app.post ("/login", async (req, res) => {
  Const useer = users.find ((u) => u.usename === req.Body.USERNAME);
  if (user && (waiting for bcrypt.compare (req.body.password, user.password))) {
    Const token = jwt.sign ({username: user.userName}, "secret_key");
    res.json ({token});
  } else {
    res.status (401) .send ("Invalid credentials");
  }
});

Step 4: Testing

Using is for API testing:

Test ("User Registration", Async () => {
  Const Response = wait for request (app) .post ("/register"). Send ({
    Username: "Testusser",
    Password: "Password123"
  });
  expect (response.statuscode) .tobe (201);
});

Step 5: Deployment

Deployment using docker:

From the node: 14
Workdir /App
Copy the package.Json ./
Start NPM installation
Copy. .
Cmd ["Node", "server.js"]
Exposure 3000

Run:

Docker Build -t MyApp.
Docker Run -P 3000: 3000 MyApp

What are the Different SDLC Models?

There are different SDLC models, each of which is suitable for different project requirements:

1. Waterfall Model- linear and sequential.

2. Agile Model- Iterative and flexible.

3. V-Model- Testing at each stage.

4. Spiral Model- Risky controlled development.

5. DevOps Model- Continuous integration and deployment.

Example: Agile methodology is used in rapidly developing projects, while the waterfall model suits well-defined static requirements.

What are the Emerging Trends in SDLC for 2025?

The future of SDLC develops with new technologies and methodologies:

• AI in development: Automated generation and code testing.

• Development of low-code/without code: Faster software creation.

• Cloud-Native Applications: Scalable and server solutions.

• Devsecops: Security integration into Devops pipes.

• MicroServices Architecture: modular and scalable applications.

Conclusion

Understanding the life cycle of software development (SDLC) is essential for creating reliable and secure applications. Whether it follows agile, devops or waterfall, selecting the right SDLC model depends on the project requirements.

At CodeRower We specialize in delivery of software solutions at world level and ensure that each phase of SDLC is processed efficiently. Are you ready to start your software journey?, Let's go together!