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kunal shah

• India is country of really bad salesman

• Do that extra 5%, that is what really differs from you from the rest

• What do people want

• Will they pay for it?

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Serverless

What's serverless?

• Serverless is a new paradigm in which the developers don't have to manage servers anymore...
• Just deploy code
• Or just deploy functions
• Initially, serverless === FaaS (Functions as a Service)
• Serverless was pioneered by AWS Lambda but now it also includes anything that's managed: "databases, messaging, storage, etc"
• Serverless doesn't mean there are no servers. It means you just don't manage / provision / see them

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AWS Kinesis

Overview

• Kinesis is a managed alternative to Apache Kafka
• Great for application logs, metrics, IoT, clickstreams
• Great for "real-time" big data
• Great for streaming processing frameworks (Spark, NiFi, etc)
• Data is automatically replicated to 3 AZ

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Amazon SNS

• The "event producer" only sends message to one SNS topic
• As many "event receivers" (subscriptions) as we want to listen to the SNS topic notifications
• Each subscriber to the topic will get all the messages (note: new feature to filter messages)
• Up to 10,000,000 subscriptions per topic
• 100,000 topics limit
• Subscribers can be:
  • SQS
  • HTTP/HTTPs (with delivery retries - how many times)
• Lambda

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Amazon SQS

Standard Queue

• Oldest offering (over 10 years old)

• Fully managed service, used to decouple applications

• Attributes

  • Unlimited throughput, unlimited number of messages in queue
  • Default retention of messages: 4 days, maximum of 14 days

• Low latency (<10ms on publish and receive)

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How to configure HTTPS for Elastic Beanstalk?

Get a SSL/TLS certificate

This can be done through AWS's Certificate Manager service.

Click here to view the steps

Open HTTPS port on the load balancer

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How to use AWS's Route 53 on top of Cloudflare?

Configure Route 53

• Create a Public Hosted Zone in Route 53
• Create a simple record for the domain you want, and where do you want to target that domain to?
• By now, you should have 3 records under the hosted zone that you just created
  • NS
  • SOA
• A

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Elastic Beanstalk

Common use cases

• Setup infrastructure for your web app
• Create your application on a broad set of curated platforms
• Scale infra for your app based on demand
• Automatically apply patches and security fixes
• Load-balance traffic for higher availability
• Monitor the health of your app

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Amazon EC2 (Elastic Compute Cloud)

Credits

Video: https://www.youtube.com/watch?v=kMMybKqC2Y0

Overall layout of EC2

• Each AWS region contains multiple availability zones

• Each availability zone has got its own networking domain, power domain, cooling subsystems

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Setting up Vercel with Cloudflare

• Go to "Domains" section in Vercel
• Type out your domain, and click on "Add"
• It'll give you an "A" record to enter in the DNS settings
• Navigate to the Cloudflare dashboard
  • From there go to DNS, and add the A record there with Proxy status being set to "true"
  • I also had an "A" record which was pointing to Namecheap, since I bought the domain from there. Make sure to remove that.
    • "A" record is basically an Address record that maps the domain name to the IP address of the computer hosting the domain
• Add a CNAME record to handle "www"