aws-sdk-java-v2-dynamodb

Name: aws-sdk-java-v2-dynamodb
Author: giuseppe-trisciuoglio

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How to install aws-sdk-java-v2-dynamodb?

giuseppe-trisciuoglio/developer-kit/aws-sdk-java-v2-dynamodb

$npx -y skills add giuseppe-trisciuoglio/developer-kit --skill aws-sdk-java-v2-dynamodb

Installs into the current project.

Summary

Provides Amazon DynamoDB patterns using AWS SDK for Java 2.x. Use when creating, querying, scanning, or performing CRUD operations on DynamoDB tables, working with indexes, batch operations, transactions, or integrating with Spring Boot applications.

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SKILL.md

1	# AWS SDK for Java 2.x - Amazon DynamoDB
2
3	## Overview
4
5	Provides DynamoDB patterns using AWS SDK for Java 2.x with Enhanced Client for type-safe CRUD, queries, batch operations, transactions, and Spring Boot integration.
6
7	## When to Use
8
9	- CRUD operations on DynamoDB items
10	- Querying tables with sort keys or GSI
11	- Batch operations for multiple items
12	- Atomic transactions across tables
13	- Spring Boot integration with DynamoDB
14
15	## Instructions
16
17	1. Add AWS SDK DynamoDB dependencies to `pom.xml`
18	2. Configure client setup (low-level or Enhanced Client)
19	3. Define entity classes with `@DynamoDbBean` annotations
20	4. Perform operations using `DynamoDbTable` (CRUD, query, scan, batch, transactions)
21	5. Handle partial failures with retry logic and exponential backoff
22	6. Use repository pattern for Spring Boot integration
23
24	## Dependencies
25
26	Add to `pom.xml`:
27	```xml
28	<!-- Low-level DynamoDB client -->
29	<dependency>
30	<groupId>software.amazon.awssdk</groupId>
31	<artifactId>dynamodb</artifactId>
32	</dependency>
33
34	<!-- Enhanced client (recommended) -->
35	<dependency>
36	<groupId>software.amazon.awssdk</groupId>
37	<artifactId>dynamodb-enhanced</artifactId>
38	</dependency>
39	```
40	## Client Setup
41
42	### Low-Level Client
43	```java
44	import software.amazon.awssdk.regions.Region;
45	import software.amazon.awssdk.services.dynamodb.DynamoDbClient;
46
47	DynamoDbClient dynamoDb = DynamoDbClient.builder()
48	.region(Region.US_EAST_1)
49	.build();
50	```
51
52	### Enhanced Client (Recommended)
53	```java
54	import software.amazon.awssdk.enhanced.dynamodb.DynamoDbEnhancedClient;
55
56	DynamoDbEnhancedClient enhancedClient = DynamoDbEnhancedClient.builder()
57	.dynamoDbClient(dynamoDb)
58	.build();
59	```
60
61	## Entity Mapping
62
63	```java
64	@DynamoDbBean
65	public class Customer {
66
67	@DynamoDbPartitionKey
68	private String customerId;
69
70	@DynamoDbAttribute("customer_name")
71	private String name;
72
73	private String email;
74
75	@DynamoDbSortKey
76	private String orderId;
77
78	// Getters and setters
79	}
80	```
81
82	For complex entity mapping with GSIs and custom converters, see [Entity Mapping Reference](references/entity-mapping.md).
83
84	## CRUD Operations
85
86	### Basic Operations
87	```java
88	// Create or update item
89	DynamoDbTable<Customer> table = enhancedClient.table("Customers", TableSchema.fromBean(Customer.class));
90	table.putItem(customer);
91
92	// Get item
93	Customer result = table.getItem(Key.builder().partitionValue(customerId).build());
94
95	// Update item
96	return table.updateItem(customer);
97
98	// Delete item
99	table.deleteItem(Key.builder().partitionValue(customerId).build());
100	```
101
102	### Composite Key Operations
103	```java
104	// Get item with composite key
105	Order order = table.getItem(Key.builder()
106	.partitionValue(customerId)
107	.sortValue(orderId)
108	.build());
109	```
110
111	## Query Operations
112
113	### Basic Query
114	```java
115	import software.amazon.awssdk.enhanced.dynamodb.model.QueryConditional;
116
117	QueryConditional queryConditional = QueryConditional
118	.keyEqualTo(Key.builder()
119	.partitionValue(customerId)
120	.build());
121
122	List<Order> orders = table.query(queryConditional).items().stream()
123	.collect(Collectors.toList());
124	```
125
126	### Advanced Query with Filters
127	```java
128	import software.amazon.awssdk.enhanced.dynamodb.Expression;
129
130	Expression filter = Expression.builder()
131	.expression("status = :pending")
132	.putExpressionValue(":pending", AttributeValue.builder().s("PENDING").build())
133	.build();
134
135	List<Order> pendingOrders = table.query(r -> r
136	.queryConditional(queryConditional)
137	.filterExpression(filter))
138	.items().stream()
139	.collect(Collectors.toList());
140	```
141
142	For detailed query patterns, see [Advanced Operations Reference](references/advanced-operations.md).
143
144	## Scan Operations
145
146	> Warning: Scan reads entire table and consumes read capacity for all items. Prefer Query operations with partition keys or GSIs whenever possible.
147
148	Validation before scan:
149	- Confirm query with partition key is not feasible for your access pattern
150	- Verify table has sufficient provisioned read capacity or use on-demand mode
151	- Consider using pagination with `limit()` to control capacity consumption
152
153	```java
154	// Scan all items
155	List<Customer> allCustomers = table.scan().items().stream()
156	.collect(Collectors.toList());
157
158	// Scan with filter
159	Expression filter = Expression.builder()
160	.expression("points >= :minPoints")
161	.putExpressionValue(":minPoints", AttributeValue.builder().n("1000").build())
162	.build();
163
164	List<Customer> vipCustomers = table.scan(r -> r.filterExpression(filter))
165	.items().stream()
166	.collect(Collectors.toList());
167	```
168
169	## Batch Operations
170
171	### Batch Get
172	```java
173	import software.amazon.awssdk.enhanced.dynamodb.model.*;
174
175	List<Key> keys = cus

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aws-sdk-java-v2-dynamodb

1.6kinstalls36forks

View on GitHub

How to install aws-sdk-java-v2-dynamodb?

giuseppe-trisciuoglio/developer-kit/aws-sdk-java-v2-dynamodb

$npx -y skills add giuseppe-trisciuoglio/developer-kit --skill aws-sdk-java-v2-dynamodb

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# AWS SDK for Java 2.x - Amazon DynamoDB
2
3	## Overview
4
5	Provides DynamoDB patterns using AWS SDK for Java 2.x with Enhanced Client for type-safe CRUD, queries, batch operations, transactions, and Spring Boot integration.
6
7	## When to Use
8
9	- CRUD operations on DynamoDB items
10	- Querying tables with sort keys or GSI
11	- Batch operations for multiple items
12	- Atomic transactions across tables
13	- Spring Boot integration with DynamoDB
14
15	## Instructions
16
17	1. Add AWS SDK DynamoDB dependencies to `pom.xml`
18	2. Configure client setup (low-level or Enhanced Client)
19	3. Define entity classes with `@DynamoDbBean` annotations
20	4. Perform operations using `DynamoDbTable` (CRUD, query, scan, batch, transactions)
21	5. Handle partial failures with retry logic and exponential backoff
22	6. Use repository pattern for Spring Boot integration
23
24	## Dependencies
25
26	Add to `pom.xml`:
27	```xml
28	<!-- Low-level DynamoDB client -->
29	<dependency>
30	<groupId>software.amazon.awssdk</groupId>
31	<artifactId>dynamodb</artifactId>
32	</dependency>
33
34	<!-- Enhanced client (recommended) -->
35	<dependency>
36	<groupId>software.amazon.awssdk</groupId>
37	<artifactId>dynamodb-enhanced</artifactId>
38	</dependency>
39	```
40	## Client Setup
41
42	### Low-Level Client
43	```java
44	import software.amazon.awssdk.regions.Region;
45	import software.amazon.awssdk.services.dynamodb.DynamoDbClient;
46
47	DynamoDbClient dynamoDb = DynamoDbClient.builder()
48	.region(Region.US_EAST_1)
49	.build();
50	```
51
52	### Enhanced Client (Recommended)
53	```java
54	import software.amazon.awssdk.enhanced.dynamodb.DynamoDbEnhancedClient;
55
56	DynamoDbEnhancedClient enhancedClient = DynamoDbEnhancedClient.builder()
57	.dynamoDbClient(dynamoDb)
58	.build();
59	```
60
61	## Entity Mapping
62
63	```java
64	@DynamoDbBean
65	public class Customer {
66
67	@DynamoDbPartitionKey
68	private String customerId;
69
70	@DynamoDbAttribute("customer_name")
71	private String name;
72
73	private String email;
74
75	@DynamoDbSortKey
76	private String orderId;
77
78	// Getters and setters
79	}
80	```
81
82	For complex entity mapping with GSIs and custom converters, see [Entity Mapping Reference](references/entity-mapping.md).
83
84	## CRUD Operations
85
86	### Basic Operations
87	```java
88	// Create or update item
89	DynamoDbTable<Customer> table = enhancedClient.table("Customers", TableSchema.fromBean(Customer.class));
90	table.putItem(customer);
91
92	// Get item
93	Customer result = table.getItem(Key.builder().partitionValue(customerId).build());
94
95	// Update item
96	return table.updateItem(customer);
97
98	// Delete item
99	table.deleteItem(Key.builder().partitionValue(customerId).build());
100	```
101
102	### Composite Key Operations
103	```java
104	// Get item with composite key
105	Order order = table.getItem(Key.builder()
106	.partitionValue(customerId)
107	.sortValue(orderId)
108	.build());
109	```
110
111	## Query Operations
112
113	### Basic Query
114	```java
115	import software.amazon.awssdk.enhanced.dynamodb.model.QueryConditional;
116
117	QueryConditional queryConditional = QueryConditional
118	.keyEqualTo(Key.builder()
119	.partitionValue(customerId)
120	.build());
121
122	List<Order> orders = table.query(queryConditional).items().stream()
123	.collect(Collectors.toList());
124	```
125
126	### Advanced Query with Filters
127	```java
128	import software.amazon.awssdk.enhanced.dynamodb.Expression;
129
130	Expression filter = Expression.builder()
131	.expression("status = :pending")
132	.putExpressionValue(":pending", AttributeValue.builder().s("PENDING").build())
133	.build();
134
135	List<Order> pendingOrders = table.query(r -> r
136	.queryConditional(queryConditional)
137	.filterExpression(filter))
138	.items().stream()
139	.collect(Collectors.toList());
140	```
141
142	For detailed query patterns, see [Advanced Operations Reference](references/advanced-operations.md).
143
144	## Scan Operations
145
146	> Warning: Scan reads entire table and consumes read capacity for all items. Prefer Query operations with partition keys or GSIs whenever possible.
147
148	Validation before scan:
149	- Confirm query with partition key is not feasible for your access pattern
150	- Verify table has sufficient provisioned read capacity or use on-demand mode
151	- Consider using pagination with `limit()` to control capacity consumption
152
153	```java
154	// Scan all items
155	List<Customer> allCustomers = table.scan().items().stream()
156	.collect(Collectors.toList());
157
158	// Scan with filter
159	Expression filter = Expression.builder()
160	.expression("points >= :minPoints")
161	.putExpressionValue(":minPoints", AttributeValue.builder().n("1000").build())
162	.build();
163
164	List<Customer> vipCustomers = table.scan(r -> r.filterExpression(filter))
165	.items().stream()
166	.collect(Collectors.toList());
167	```
168
169	## Batch Operations
170
171	### Batch Get
172	```java
173	import software.amazon.awssdk.enhanced.dynamodb.model.*;
174
175	List<Key> keys = cus

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