Hardik Patil

Okay. So I'm starting introduction myself. First of all, uh, I'm Hardik Huddl. I have done, uh, many projects in React, in .net. Okay. So in React particular, I have, uh, good knowledge about components, uh, based architecture. Okay. Then component builds, uh, architecture, then, uh, component life cycles, uh, reutilated all the hoops. Okay. Like, uh, use state, useEffect, all the hooks, which which I have implemented in my daily, uh, daily, uh, routine in the development. K. I use store, uh, real Redux store for managing state and, uh, its data. Okay? All the things. And, uh, I can see, uh, I worked, uh, in a a functional, uh, based components. Okay. So it it is, uh, I have very, uh, good knowledge of all of of all reactor concepts. K. I have done so many projects in, uh, and, uh, working like registers and page, login page, or accounts page related to client's requirement, which, uh, which, uh, which kind of task they're providing. And I have done all the tasks with respective. And I have good knowledge about in JavaScript as well. And, uh, in back end, I have done in a dot net. Uh, and particularly for this opportunity, I'm going to, uh, talking with only, uh, Reek as I have applied for the agent developer. So all the basic things I have done, and I have good knowledge all, uh, about all the rate, uh, all the rate relating, uh, related things, like, as I discussed, the life cycle with components. Okay? By the, uh, either directionally the flow and all the things which, uh, in within the reports.

How can you implement animation in the React that synchronizes with state dates and does not hinder performance. Okay. So for this, basically, for this, I have to start with, uh, use a CSS and transition and animations. Okay. So, uh, so many strategies for these, uh, uh, such CSS CSS transitions, any animations are hardware accelerated and run outside the React render life cycle, ensuring, uh, smooth animation. K. Uh, after that, I'm going with the read, uh, transition group. Like, a rate a rate transition group is a library specifically for managing component animation of React in React, actually. Okay. So after that, I'm going to, uh, I I will, uh, discuss about the read screen. The reexplain is a powerful label for create animation in kit with the physical physics based approach. I can see. Okay. So this is the one we use and then, uh, I can save framer motion. Tremor motion is another powerful level for animation with, uh, excellent performance. Yeah. Uh, after that, I can say, uh, Yeah. This kind of things, uh, strategies and tools, you know, we can create smooth animation that, uh, that are synchronized with state of, uh, updates without compressing and performance or to, uh, to our react, uh, application.

What measures would you take to prevent memory leaks in a React application with complex state management? Okay. So, uh, for the complex data management, I can say I I can I can start first, We'll, uh, clean up subscription and timers? Okay. And so that any subscription or timer or clean up when, uh, when components and mounts. Okay? Use the useEffect cleanups functional or or functional component or component, uh, component will unlock for class components. Okay. After that, I can go with avoid state, uh, updates on and mode components. Like, even state updates on unknown components. Okay. Uh, which can lead, uh, to memory leak and unexpected behavior. Now use flex or cleanup functions to manage this, like, uh, use use reducer for complex state management. We can also use use reducer for complex statements. I mean, basically, we are using, uh, uh, user reducer for that. And when managing complex state, uh, consider using the, uh, use reducer hook instead of multiple used state calls. Okay? So we can avoid in each state multiple calls, uh, using use, uh, reducer. This helps in keeping the state logic centralized and easier to maintain. Okay. And then I can go with the user app user app to persist value between renders between the renders and read. So use user app to persist, uh, value without causing re renders. Right? Uh, this particular is forward tracking, mutable. Well, you like time or ID. Okay. Uh, IDs or previous state values, like, I can say. Okay. So this is the then optimized component re renders. It's also using use memo to prevent unnecessary renders of functional component and should component that for class component. Then, uh, our anonymous functions in use script and use callback to prevent, recreate functions or, uh, every render. Okay. And another thing I can say, monitor memory usage usage. So here, could regularly profile application to ensure that memory usage remains stable over time. So following the these measures, uh, we can, uh, we can effectively manage state and avoid memory leaks in React.

What is your preferred architecture for a scalable and wind level real project that includes API integration? Okay. So first of all, if we are talking about architecture to maintain, uh, rate projects. So, uh, I can say it's a layered architecture. Okay. 1st, in inside, uh, uh, presentation layer, I can say service layer, data access layer. Okay. And, uh, I can say integration layer. Okay. And, uh, another thing is, uh, folder structure. Like, clean and organized folder structure because we are, uh, we are we are using in all our, uh, our projects. Like, it's a basic things. Okay? Uh, we can start with create a component folder view, log in out all API folders, assets, styles. Okay. All the things is coding this this folder structure. And, uh, another thing is going to say the key concept the components. Sorry. Key components. So key, uh, components and views. Components in the reusable UI elements, technically, stateless and presentational. Okay. And view in view, I can say, base level components that aggregate multiple components in minutes state. Uh, service layer, uh, services. So we can, uh, whenever we are talking about services, functional or class that contain basic logics business logic, this interact with the data access and layer and the integration layer, uh, data access layer. So in this API centralized model for API calls. You can use library like exios, uh, for a CTP request. We can generally use exios for and react for, uh, API calling. Right? So in Davis and encapsulates third party services integrations provided the interface for the service layer. It hooks the main things, uh, are you to, uh, for the functional components. So custom hooks and feasible logic related to state and side effects. Okay. Contexts context for managing global state. Okay. And providing state to deeply nested component. So we can all, uh, we can also use context. Now after testing, unit testing, integration testing, end to end testing is the type of testing you can see. CICD set up continuous continuous integration and deployment, uh, pipelines using tools like GitHub Action. Okay. Circle, uh, Jenkins, like Okay. Performance optimization, code splitting, and low latency loading for components for optimization performance using react array for memo, use memo. Okay. Use callbacks, optimize state management, and avoid unnecessary renders, in security, handle sensitive data carefully and securely, uh, and documentation. All the following is architecture, we can ensure that, uh, our project is scalable and maintained at all.

What steps would you follow to ensure a smooth API integration for real time data updates in React dashboard? Okay. So, uh, if we are talking about, uh, API integration. Right? So we have so many so many third party libraries. Uh, okay. But, uh, like like, I use okay. Like I use. Uh, mainly use your existing. Uh, first of all, going to to, uh, real time data that's in the desktop. So we are going, uh, first of all, plan the integration, uh, define, uh, requirements, choose protocols. Okay. Set up the projects. So set up the project. Uh, initialize the React project, uh, install all the dependencies. After that, uh, design the API layer. API service, create a service layer to handle API requests, like, uh, all I already talking about exist, uh, setup, uh, real time communication, WebSockets, and connection. We are generally use, uh, use this for real time communication, WebSocket. Set a WebSocket connection to receive real time updates. Okay. Uh, after that, state management, a heap to query, uh, real time data handling. Okay? So custom hook to for real time updates. We can we can create custom hooks for that. After that, integrate into components. Then after, I can say, uh, testing, unit testing, and, uh, integration testing. Okay. Testing is also a role, uh, part of the cycle. Uh, deployment and monitoring, uh, deploy, monitor, like so using this, uh, we can ensure a smooth VPN integration and, uh, really try updating the desk board.

Then how to achieve prop driven navigation in a single page read application. Okay. So, uh, prop driven, uh, navigation, uh, whenever we're talking about problem navigation. So, first of all, in our mind, comes to thought about in, uh, changing the, uh, impromptu and navigation. The single visited application involves changing the dis, uh, displayed component based on props rather than replying, relaying so, uh, solely in route changes. So set up the project, initialize the project. Uh, okay. Install the React router. Okay. So second thing is create a navigation component. Define the main navigation component. Okay. Uh, create a digital page components components for all the page. Uh, then third one is prompt driven navigation within nested components, nested navigation examples. Okay. After that, uh, I can see, uh, prompt driven navigation with state manage state management. Sorry. So use context for global state, then I wrap the application with navigation context. Okay. Use context in component. After that yeah. I can say, uh, this is okay. I I think, uh, this is the it's done, uh, for the setup. Provide clear way to handle handle prop driven aviation with the real component. We can achieve the things within the steps I I already shared.

Given this API integration function, identify any major concern with regards to API or handling and explain what would be done to improve it. Okay. Function get integrated data. Get open. URL, drop it close. Let me get open. H round 0 open URL round ticket close. 10 round ticket open response lambda response dot JSON round ticket open round to get close, dot 10, round to get open data, lambda. Duplicate, console dot log, uh, round bracket, single comma, success, comma. Single comma. Comma, the data on the date. It's 0. Okay. Given this, it can be I'm trying to do it. I'm trying to use a response with the reverse API error handling. Let me explain what what could be done to him for it. Okay. So for improving, uh, this error hand API handling, we can use promise. Okay. So we can, uh, handle the error. Okay. Uh, we can use also async await. Okay. Uh, we can also use a try catch. So so many things. Uh, we can use promises. Uh, I can give the priority to promise. So handle all the errors and error API error handling easily and smoothly. So I have already done all, uh, this kind of stuff. So I I always use promises for error handling. So I suggest you, uh, we can use, uh, promises in these scenarios.

Okay. Looking at this code snippet, can you explain what might be the issue why the component is not rendering as expected when the state changes? Okay. Data the data. Use state. Okay. Use effect. Sdata.thenresponse.thedata.response.data. Notice then the dependent CRM. Okay. Okay. So in this code snippet, if you want to rerender page in every state chain, so we can set the state value means here the data is our set value, so we can put it into the dependency of the use effect. And all the time, whenever the data will update it, the page will be rerender as expected. So I think the issue is we are not putting the state variable into the dependency. So if we are putting into the dependency, it will works and, uh, working as expected.

What method would you see if would you use to dynamically load component in a fleet application to optimize performance. Okay. So, uh, the method, I use for dynamic load component. So use react to a lazy and suspense. Okay. Uh, set up dynamic. Okay. Create component if not already created. Then actually, uh, rate lazy functions lets you dynamically import a component. The the imported component will only be loaded when it is needed. Suspense. In suspense, the component allow you to specify the fallback to show while the lazy loaded component is being loaded. Uh, so by using react lazy and suspense, uh, you can split your code and load component only when you are needed. Uh, this improves the initial load time and of your re application. Okay. Then I can say, uh, I don't want using, uh, usage with, uh, React Router. So if we are using React Router, navigate, we can combine with lazy and, uh, rear suspense with the router based components. Install the React Router. Set up router with the lazy loading. Okay. So we cannot show. Uh, another thing is we can see benefits. Okay. Performance optimization, improve users, uh, use, uh, experience, uh, uh, scalability. Okay. So, uh, using, uh, direct latency and suspense, uh, spends, uh, for dynamic imports is a straightforward and effective, uh, way to optimize performance of our lead application.

Create a way to implement middleware in DJing or to support a custom authentication flow from a real print and Okay. So implement, uh, uh, middleware and design go to support a custom authentication flow from a real front end. Right? So, uh, we'll need to follow several steps. So, uh, we can start with set up the the Django projects, create a Django projects and app app, uh, and, uh, add the app to installed apps. Okay. Uh, create custom authentication middleware for this middleware for custom authentication. Okay. So after that, I can say, uh, add me deliver an authentication back end to settings. Okay. Uh, going with, uh, token model, create a model token model. Okay. Create apply in migrations. Create a view for token generation. Uh, again, we will create a view for token generation. We need to generate token. Okay. Uh, after that, add URL for token generation. We'll must have add the URL for token generation. Include app, uh, URL in project URLs. Okay. After that, create content setup. We have to set up our project create log create login component in React. Okay. The basic page of the login page of create, uh, re re fetch data with authentication in React. We can we have to fetch data with React. Okay. Uh, that I can say security and best practices, like use HTTP, SQL token storage, token expiry and refresh, CSR, uh, CSRF protection, CSRF protection in place for state changing request, uh, basically. So, uh, with this, uh, we can implement customer authentication with our in to support our customer authentication flow.

What approach would you take to optimize staging or rest framework serializer for a high performance react application. Okay. So Serialize for a high performance, high rate applications, and all of combination of, uh, basic skills. Uh, like, caching strategies and effective query handling. Uh, I get okay. Uh, first of all, uh, use selective serialization. Uh, minimize and data serialization serialized, like, only include field data necessary for API response or serialized necessary unnecessary field to reduce the amount of data processed and transfer. Okay. Use field up attributes. Okay. Uh, efficient query handling. Use select relate, uh, related and prefetch related. This matter method helps to reducing the number of database where is especially when they're dealing with related models. Okay. Uh, after that, I can say use annotated, uh, fields. Uh, okay. After that, uh, custom serializer methods. Use serializer context. Okay. Pass context to serializer. Okay. Yeah. As we discussed about, uh, lazy loading and default fields, Use only and differ. Use the only method to, uh, load only specific, uh, field from the database. Okay. Caching strategies. Uh, uh, cache expensive queries. I use DG angles coaching framework to catch, uh, expensive queries and reduce data based load. Okay. Test to serialize result. Okay. Yes. After that, uh, we are going to Use. Okay. Then profit and optimize. So by implement these strategies, we can significantly optimize these frameworks framework serializers for high performance rate application.