Amazon Web Services Lambda

Website

docs.aws.amazon.com

Categories

#Development #Cloud Computing #VPS #Cloud Infrastructure

DynamoDB

Website

aws.amazon.com

Categories

#Databases #NoSQL Databases #Relational Databases #Cloud Hosting

Amazon Web Services Lambda features and specs

• Scalability
  AWS Lambda automatically scales your application by running your code in response to each trigger, handling scaling from a few requests per day to thousands per second.
• Cost Efficiency
  Lambda charges you only for the compute time you consume, without the need to pay for idle server time, which helps optimize cost efficiency.
• No Server Management
  You don't have to manage any servers or infrastructure, allowing you to focus on writing code and developing functionality rather than maintaining hardware.
• Event-driven Model
  Lambda integrates seamlessly with other AWS services and can be triggered using AWS events, making it highly suitable for building event-driven and serverless architectures.
• Flexible Scaling and Processing
  AWS Lambda provides flexibility in resource allocation, allowing you to adjust memory and execution timings to optimize performance for different workloads.

Possible disadvantages of Amazon Web Services Lambda

• Cold Start Latency
  The first invocation of a Lambda function can experience a delay known as 'cold start,' which can affect applications sensitive to latency.
• Execution Timeout
  Lambda functions have a maximum execution timeout of 15 minutes, which may not be suitable for long-running processes or tasks.
• Resource Limitations
  Lambda has limitations on memory, disk space, and other resources, which can restrict the functions it can perform depending on application requirements.
• Vendor Lock-In
  Using AWS Lambda heavily can lead to vendor lock-in, making it challenging to migrate to different platforms without significant re-architecting.
• Complexity in Large Systems
  For large systems with numerous functions and dependencies, managing and orchestrating Lambda functions can become complex and challenging.

DynamoDB features and specs

• Scalability
  DynamoDB automatically scales up and down to handle your application's needs, with no intervention required. This allows for easy handling of traffic spikes and growth over time.
• Performance
  With its fast, predictable performance at any scale, DynamoDB ensures low-latency responses, even with large volumes of data.
• Fully Managed
  As a fully managed service, DynamoDB handles hardware provisioning, setup, configuration, replication, software patching, and backups, letting you focus on your application.
• Flexible Data Model
  DynamoDB supports both document and key-value store models, providing flexibility in how you structure your data.
• Security
  DynamoDB integrates with AWS Identity and Access Management (IAM) to provide fine-grained access control and encrypts data at rest and in transit.
• Global Tables
  You can create multi-region, fully replicated tables for high availability and globally distributed apps with low latency reads and writes.
• Event-Driven Architecture
  DynamoDB integrates with AWS Lambda for automatic triggering and the creation of event-driven architectures.

Possible disadvantages of DynamoDB

• Pricing Complexity
  DynamoDB's pricing model, which charges based on read and write capacity units, storage, and data transfer, can be complex and difficult to predict.
• Limited Query Capabilities
  DynamoDB does not support complex queries as well as traditional SQL databases. Querying capabilities are limited primarily to primary key attributes.
• Secondary Indexes
  While DynamoDB supports secondary indexes, their use can be limited and complex to manage effectively compared to relational databases.
• Consistency
  DynamoDB offers eventual consistency by default. While strongly consistent reads are available, they can be more expensive and slower.
• Data Size Limitations
  Each item in a DynamoDB table must be 400KB or less, limiting the amount of data you can store in a single item.
• Vendor Lock-In
  Using DynamoDB heavily ties your application to AWS, which can be a downside if you want to maintain flexibility in your cloud infrastructure choices.

Analysis of DynamoDB

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#13 - Amazon DynamoDB Basics In Under 5 Minutes [Tutorial For Beginners]

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