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所在平台: Udemy |
课程主页: https://www.udemy.com/course/dynamodb-preparation-practice-tests/
课程评论：没有评论
课程名称：DynamoDB 准备练习测试 课程概述： DynamoDB 是亚马逊网络服务（AWS）提供的一种完全托管的 NoSQL 数据库服务，能够提供快速和一致的性能以及无缝的可扩展性。它旨在满足互联网规模应用的需求，允许开发人员存储和检索任意量的数据，每天能够处理超过 10 万亿的请求，并支持每秒超过 2000 万的峰值请求。这使其成为移动、网络、游戏、广告技术、物联网等多种需要低延迟数据访问的大规模应用的热门选择。 DynamoDB 提供内置的安全性、备份和恢复功能，以及内存缓存，支持互联网规模的应用程序。通过在多个 AWS 可用区自动复制数据，DynamoDB 确保了高可用性和数据持久性。它支持文档和键值存储模型，灵活的数据建模和可靠的性能确保其在扩展时也能保持高效。此外，其 API 操作允许用户执行数据操作，如项目操作（获取/放置/删除）以及查询和扫描操作，实现复杂的数据检索。 对于开发人员，DynamoDB 提供了一系列工具和功能，使应用程序开发变得更加容易。它与 AWS Lambda 集成，支持无服务器架构，代码可以自动由 DynamoDB 事件触发，从而创建一个高效灵活的应用开发环境。这一集成简化了构建对 DynamoDB 表中数据变化实时响应的应用程序的过程。 DynamoDB 还支持全球表等高级功能，允许完全复制的多区域和多主数据库为全球分布的用户提供低延迟的数据访问，这对需要高可用性和灾难恢复能力的企业尤为重要。此外，DynamoDB Streams 捕获 DynamoDB 表中项目级别的修改，使得可以响应数据变化触发其他服务的工作流。这一功能使实时分析和交互模式得以实现，尤其适用于动态网页应用。 凭借其全面的功能集，DynamoDB 为管理数据库操作提供了可扩展、安全和高效的解决方案，使企业能够专注于创新和发展，而不是数据库管理。
DynamoDB is a fully managed NoSQL database service offered by Amazon Web Services (AWS) that delivers fast and consistent performance with seamless scalability. Designed for internet-scale applications, it allows developers to store and retrieve any amount of data, handling more than 10 trillion requests per day and supporting peaks of more than 20 million requests per second. This makes it a popular choice for mobile, web, gaming, ad tech, IoT, and many other applications that require low-latency data access at any scale.The service offers built-in security, backup and restore, and in-memory caching for internet-scale applications. DynamoDB is designed to provide high availability and data durability by automatically replicating data across multiple AWS Availability Zones. It supports both document and key-value store models, and has flexible data modeling and reliable performance, even as it scales. Additionally, its API actions allow users to perform data operations, such as Item operations (Get/Put/Delete) and Query and Scan operations, which enable complex data retrieval.For developers, DynamoDB offers a range of tools and features that make it easier to develop applications. It integrates with AWS Lambda to enable serverless architectures, where code can be automatically triggered by DynamoDB events, creating a highly efficient and flexible environment for application development. This integration simplifies the process of building applications that react in real-time to data changes in DynamoDB tables. With its robust feature set and integration capabilities, DynamoDB is a cornerstone for developers building scalable, high-performance applications in the AWS ecosystem.DynamoDB also supports advanced features such as global tables, which enable fully replicated, multi-region, and multi-master databases that provide low-latency data access to users distributed globally. This feature is particularly important for businesses that require high availability and disaster recovery capabilities. Additionally, DynamoDB Streams capture item-level modifications in DynamoDB tables, making it possible to trigger workflows in other services in response to data changes. This feature enables real-time analytics and interaction patterns that are crucial for dynamic web applications. With its comprehensive feature set, DynamoDB offers a scalable, secure, and efficient solution for managing database operations, allowing businesses to focus on innovation and growth rather than database management.
