AWS Lambda

Website

aws.amazon.com

$ Details

Categories

#Cloud Computing #Cloud Hosting #Business & Commerce #Object Storage

Amazon Cognito

Website

aws.amazon.com

$ Details

-

Categories

#Identity Provider #SAML #Identity And Access Management #SSO

AWS Lambda features and specs

• Scalability
  AWS Lambda automatically scales your application by running your code in response to each trigger. This means no manual intervention is required to handle varying levels of traffic.
• Cost-effectiveness
  You only pay for the compute time you consume. Billing is metered in increments of 100 milliseconds and you are not charged when your code is not running.
• Reduced Operations Overhead
  AWS Lambda abstracts the infrastructure management layer, so there is no need to manage or provision servers. This allows you to focus more on writing code for your applications.
• Flexibility
  Supports multiple programming languages such as Python, Node.js, Ruby, Java, Go, and .NET, which allows you to use the language you are most comfortable with.
• Integration with Other AWS Services
  Seamlessly integrates with many other AWS services such as S3, DynamoDB, RDS, SNS, and more, making it versatile and highly functional.
• Automatic Scaling and Load Balancing
  Handles thousands of concurrent requests without managing the scaling yourself, making it suitable for applications requiring high availability and reliability.

Possible disadvantages of AWS Lambda

• Cold Start Latency
  The first request to a Lambda function after it has been idle for a certain period can take longer to execute. This is referred to as a 'cold start' and can impact performance.
• Resource Limits
  Lambda has defined limits, such as a maximum execution timeout of 15 minutes, memory allocation ranging from 128 MB to 10,240 MB, and temporary storage up to 512 MB.
• Vendor Lock-in
  Using AWS Lambda ties you into the AWS ecosystem, making it difficult to migrate to another cloud provider or an on-premises solution without significant modifications to your application.
• Complexity of Debugging
  Debugging and monitoring distributed, serverless applications can be more complex compared to traditional applications due to the lack of direct access to the underlying infrastructure.
• Cold Start Issues with VPC
  When Lambda functions are configured to access resources within a Virtual Private Cloud (VPC), the cold start latency can be exacerbated due to additional VPC networking overhead.
• Limited Execution Control
  AWS Lambda is designed for stateless, short-running tasks and may not be suitable for long-running processes or tasks requiring complex orchestration.

Amazon Cognito features and specs

• Scalability
  Amazon Cognito can automatically scale to handle millions of users, making it suitable for both small and large applications.
• Security
  It is integrated with AWS Identity and Access Management (IAM) and comes with built-in security features such as multi-factor authentication (MFA) and encryption.
• Integrations
  Cognito seamlessly integrates with other AWS services and can be easily incorporated into your existing AWS infrastructure.
• Federated Identities
  It supports federated identities, allowing users to sign in with different identity providers like Google, Facebook, and enterprise identity providers via SAML.
• User Management
  Offers robust user management features such as user groups, roles, and fine-grained access permissions, which are essential for more complex applications.

Possible disadvantages of Amazon Cognito

• Complexity
  Setting up and configuring Cognito can be complex, especially for developers who are not familiar with AWS services or identity management.
• Cost
  While the initial tier is free, costs can add up quickly for applications with a large user base and high interaction volume.
• Limited Customization
  Although you can customize some aspects of the authentication flow, there are limitations which can be restrictive if you need highly tailored authentication processes.
• Regional Availability
  Cognito may not be available in all AWS regions, which can be a limitation if your application needs to comply with data residency requirements or leverage a specific AWS region.
• Learning Curve
  There is a learning curve associated with understanding how to effectively use and integrate Cognito within your application, which can take time and resources.

AWS Lambda Vs EC2 | Serverless Vs EC2 | EC2 Alternatives

More videos:

Amazon Cognito Tutorial - Amazon Cognito User Pools & AWS Amplify Setup