mike1011 · July 17, 2023 19:46 · Jul 17, 2023 · Dec 7, 2022 · Feb 3, 2021
diff --git a/FrontEnd Interview questions b/FrontEnd Interview questions
@@ -36,6 +36,18 @@ NodeJS Payload Validation - use express-validator/payload-validator
 few ORM libraries in node
 Middleware in Nodejs
 Few libraries in Node - express, axios, sequelize, 
-Node js for Microservices
+Node js for Microservices - 
+    https://medium.com/swlh/building-javascript-microservices-with-node-js-d88bf0bb2b92
+    https://www.turing.com/kb/how-to-build-microservices-with-node-js
 Node is Single thread?
 What is event loop and how it works.
+working of event loop - https://nodejs.org/en/docs/guides/event-loop-timers-and-nexttick
+using multithreading in nodejs - https://www.digitalocean.com/community/tutorials/how-to-use-multithreading-in-node-js
+performance optimization in node - 
+   https://www.section.io/engineering-education/performance-optimization-techniques-for-node-js/
+   https://www.simform.com/blog/node-js-performance/
+Transaction management in node - 
+  using sequelize - https://stackoverflow.com/questions/49654053/transaction-management-in-promises-operations-of-nodejs
+  using raw sql - https://sehannrathnayake.medium.com/how-to-handle-mysql-database-transactions-with-nodejs-b7a2bf1fd203
+
+
diff --git a/FrontEnd Interview questions b/FrontEnd Interview questions
@@ -2,12 +2,40 @@ What is Circular Dependency?
 Shallow vs Deep Copy.
 Array.sort() - with numbers and strings.
 PUT vs PATCH
-NodeJS Payload Validation - use express-validator/payload-validator
 What is package-lock.json?
-Nodejs Performance - using PM2, Load balancer, native cluster module in node, 
 ---ref - https://medium.com/iquii/good-practices-for-high-performance-and-scalable-node-js-applications-part-1-3-bb06b6204197
 What is this? How arrow functions using it to help the binding?
 Session Management in Nodejs
 API Authentication in Nodejs
 Default memory size in NOdejs
 High Order functions in Javascript
+Features of ES6
+What is arrow functions and advantages
+let vs const vs var
+Use destructting and spread operator with example
+
+
+
+======= Coding =================
+Reverse a string
+
+
+======= REACT JS ===============
+Different lifecycle methods of a component
+Redux in React - what is action, reducer and dispatcher
+Class vs Functional comonents
+Error Boundary and how to use it.
+What is react-router and how to use it.
+How to handle 404 request using React router.
+Types of hooks..useState hook with and without dependency
+useMemo vs useCallback
+
+======== NODEJS ================
+Nodejs Performance - using PM2, Load balancer, native cluster module in node, 
+NodeJS Payload Validation - use express-validator/payload-validator
+few ORM libraries in node
+Middleware in Nodejs
+Few libraries in Node - express, axios, sequelize, 
+Node js for Microservices
+Node is Single thread?
+What is event loop and how it works.
diff --git a/FrontEnd Interview questions b/FrontEnd Interview questions
@@ -0,0 +1,13 @@
+What is Circular Dependency?
+Shallow vs Deep Copy.
+Array.sort() - with numbers and strings.
+PUT vs PATCH
+NodeJS Payload Validation - use express-validator/payload-validator
+What is package-lock.json?
+Nodejs Performance - using PM2, Load balancer, native cluster module in node, 
+---ref - https://medium.com/iquii/good-practices-for-high-performance-and-scalable-node-js-applications-part-1-3-bb06b6204197
+What is this? How arrow functions using it to help the binding?
+Session Management in Nodejs
+API Authentication in Nodejs
+Default memory size in NOdejs
+High Order functions in Javascript
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