AWS Java SDK Skills Guide

Quick reference to 10 AWS SDK for Java v2 skills for cloud development. See individual skill files for complete details.

Skills Overview

Core Setup

aws-sdk-java-v2-core

File: skills/aws-sdk-java-v2-core/SKILL.md

SDK initialization: client configuration, credential management, async operations.

When to use:

• Setting up AWS SDK clients
• Configuring credentials and regions
• Async/await patterns

Storage

aws-sdk-java-v2-s3

File: skills/aws-sdk-java-v2-s3/SKILL.md

S3 operations: bucket operations, object upload/download, presigned URLs.

When to use:

• File upload/download
• Bucket management
• Generating presigned URLs for public access

Pattern:

S3Client s3 = S3Client.builder().build();
s3.putObject(
    PutObjectRequest.builder()
        .bucket("my-bucket")
        .key("file.txt")
        .build(),
    RequestBody.fromString("content")
);

Databases

aws-rds-spring-boot-integration

File: skills/aws-rds-spring-boot-integration/SKILL.md

Aurora RDS: cluster setup, connection pooling, read/write split, failover.

When to use:

• Spring Boot with RDS Aurora
• Connection pool configuration
• Multi-AZ failover

aws-sdk-java-v2-dynamodb

File: skills/aws-sdk-java-v2-dynamodb/SKILL.md

DynamoDB: table operations, queries, scans, transactions.

When to use:

• NoSQL database operations
• Query and scan patterns
• Transactional writes

aws-sdk-java-v2-rds

File: skills/aws-sdk-java-v2-rds/SKILL.md

RDS management: instance creation, snapshots, parameter groups.

When to use:

• RDS cluster management
• Automated snapshots
• Parameter group configuration

Compute

aws-sdk-java-v2-lambda

File: skills/aws-sdk-java-v2-lambda/SKILL.md

Lambda: function invocation, event handling, custom runtimes.

When to use:

• Invoking Lambda functions
• Event-driven architecture
• Async job processing

Security & Secrets

aws-sdk-java-v2-secrets-manager

File: skills/aws-sdk-java-v2-secrets-manager/SKILL.md

Secrets Manager: retrieval, rotation, caching.

When to use:

• Managing API keys and passwords
• Secret rotation
• Credential caching

aws-sdk-java-v2-kms

File: skills/aws-sdk-java-v2-kms/SKILL.md

KMS encryption: key management, encryption/decryption, envelope encryption.

When to use:

• Data encryption
• Key management
• Envelope encryption patterns

Messaging

aws-sdk-java-v2-messaging

File: skills/aws-sdk-java-v2-messaging/SKILL.md

SQS/SNS: queue operations, topic publishing, message processing.

When to use:

• Async messaging
• Event-driven systems
• Decoupled services

AI & ML

aws-sdk-java-v2-bedrock

File: skills/aws-sdk-java-v2-bedrock/SKILL.md

Bedrock: model invocation, streaming, guardrails.

When to use:

• Using Bedrock AI models
• Streaming responses
• Content filtering with guardrails

Common Workflows

File Management with S3

1. aws-sdk-java-v2-core          → Setup client
2. aws-sdk-java-v2-s3            → S3 operations
3. aws-sdk-java-v2-secrets-manager → S3 credentials

Secure Data Storage

1. aws-sdk-java-v2-core          → Setup
2. aws-rds-spring-boot-integration → Database
3. aws-sdk-java-v2-kms           → Encryption
4. aws-sdk-java-v2-secrets-manager → Secrets

Async Job Processing

1. aws-sdk-java-v2-messaging     → SQS queues
2. aws-sdk-java-v2-lambda        → Lambda workers
3. aws-sdk-java-v2-dynamodb      → Result storage

Pub/Sub System

1. aws-sdk-java-v2-messaging     → SNS topics + SQS queues
2. aws-sdk-java-v2-core          → Client setup
3. aws-sdk-java-v2-kms           → Message encryption

Spring Boot with AWS

1. aws-rds-spring-boot-integration → Database setup
2. aws-sdk-java-v2-s3             → File storage
3. aws-sdk-java-v2-secrets-manager → Configuration
4. aws-sdk-java-v2-messaging       → Event processing

Technology Stack

• AWS SDK: Java v2 (non-blocking)
• Spring Boot: 3.x/4.x (optional)
• Database: RDS Aurora, DynamoDB
• Storage: S3
• Messaging: SQS, SNS
• Security: KMS, Secrets Manager
• AI: Bedrock

Common Patterns

Request/Response

SqsClient sqs = SqsClient.builder().build();
SendMessageResponse result = sqs.sendMessage(
    SendMessageRequest.builder()
        .queueUrl("https://...")
        .messageBody("message")
        .build()
);

Async Operations

S3AsyncClient s3 = S3AsyncClient.builder().build();
CompletableFuture<GetObjectResponse> response = 
    s3.getObject(GetObjectRequest.builder()...build(), ...);

Error Handling

try {
    s3.getObject(...);
} catch (NoSuchKeyException e) {
    // Handle missing object
} catch (S3Exception e) {
    // Handle S3 errors
}

Note: For complete patterns and examples, see individual skill files in skills/