What is an API Gateway?

[@olajohnson8101]

This is perfect timing on this topic. I’m working on a new API gateway for my company .

[@sumeshnayar]

did you use a library if yes which one , any suggestions as i am working on api gateway for microservices . mern stack

[@RahulM-br7io]

what company please

[@nehakhatri3921]

You are best teacher

[@MagnumCarta]

He accepts either 1 lakh or one 1 latke.

[@shreyasgtrivikram8467]

Topic is Explained very nicely . Would it be possible for you to provide the link for the free resource on CDN's on how they deliver live streaming . Would be really helpfull Thank you 😇

[@r0075h3ll]

Is it the Controller that is referred to as API Gateway, or are these two completely different? If so, then how?

[@girishanker3796]

The controller is actually part of your service itself. Gateway is a server which routes the incoming client requests to the service ( which will hit the controller inside the service)

[@MagnumCarta]

Controller if you mean K8s is part of the control plane. API Gateway is Ingress / reverse proxy.

[@dpynsnyl]

to avoid SPOF in a single geographic location, we can also use something like Raft or Paxos to manage consensus and leader election.

[@SubhramRana]

Is api gateway is a persistent service? No. Then why is this required? Since this is stateless, deploying replica would serve the purpose

[@sadashivudubalabhadra4186]

Why do we need to add Authorization, validation, rate limit..etc in api gate level. We can add it in each microservice level correct?

[@RiteshYadav-rc1np]

yes you can do it but it will create unnecessary load on microservices why not to prevalidate all this things in api gateway so thats the crux

[@ashishkumarmishra3570]

What is the algorithm working behind the load balancer forwarding requests to the POST service having the least load?

[@gkcs]

There are many: weighted round robin, least connections, etc...

[@NilakshMalpotra]

Thanks! Great vid

[@aryankr]

kudos to your work on the topic.

[@gkcs]

Thank you!

[@UECAshutoshKumar]

Thank you

[@atulrai1713]

Why do we need to make a deployment on API Gateway in case of contract changes in any of the services? It is because you are also validating the incoming requests (validating request payload) on API Gateway? Also, Does all the validation and authorization logic in API gateway goes inside the API Gateway Authorizer?

[@Prashantsingh896]

Right, lets say we are checking the incoming req against a predefined schema so any changes to that schema would need a new deployment. Otherwise incoming requests would be validated against the old schema. Also not all validation/authorization logic goes in gateway, it can reside in service itself also.

[@jairajsahgal7101]

Thank you for such a good topic

[@shabeebck3057]

A this api gateway be netsjs ?

[@sanjeevkumarrai8440]

API gateways are used when client wants to call any of the endpoint right. but how does two microservice A and B will communicate with each other. Is it via gateway even when we use restTemplate to make API calls? Please answer this question

[@gkcs]

They communicate with each other directly using GRPC or some other protocol. Have a look at my WhatsApp System Design video to get ideas around this.

[@shamisheth87350]

Gaurav bhai even chat gpt recomended you for system design

[@gkcs]

Cheers!

[@everybot-it]

Thank you!

[@gkcs]

Thank you 😁

[@NeerajSharma-mz4es]

nice explanation

[@RicardoSilvaTripcall]

Great video as always, if it's possible, I would like to hear more about different techs or patterns that enable 3rd party services to communicate with each other without the need of API gateways. API Gateways also acts as a Reverse Proxy, so your internal services are not exposed to the internet, how to do that without a proxy or a direct VPN link?

[@muhammedshafeeh9133]

Thanks gaurav

[@z.719]

Thanks 👍

[@gkcs]

Thank you!

[@cripz4203]

Our company uses AWS Chalice as the default tech stack now in almost all projects. 😅

[@gopalsirotha]

Are you currently hiring for interviewready ??

[@gkcs]

Content writers, yes 😁

[@mrrishiraj88]

Good day greetings

[@sachinbandil9245]

sir good evening as i am new to programming world and facing several challenges while solving the questions can you please help me to overcome come from this problem i want to learn these technologies

[@rishiraj2548]

🙂👍🏻

[@vaishalii_]

how come after two years of working you know so much,

[@gkcs]

It's 9 years of working 😛

[@vaishalii_]

hahaha okay maybe i rushed through your linkedIn@@gkcs

[@AyushGupta29164]

sir kya aap hindi main padhoege kya

[@gkcs]

www.youtube.com/@indian-software-engineer

[@abhijeetsingh2933]

War story?

[@abhijeetsingh2933]

@@Elwacho1964 ? I didn't get it