elasticache 
elastic file system 
elasticache                       
    
            
            
                            The ElastiCache   Videos. 有关更多信息,请参阅AmazonVPC和ElastiCache 安全性。 For more information, see Amazon VPCs and ElastiCache   Security. AmazonElastiCache 现已支持R4节点类型。 Amazon ElastiCache   now supports M4 node types. NET,建议您使用AmazonElastiCache 客户端库之一。 NET, we recommend you use one of the Amazon ElastiCache   client libraries. Amazon Elastic File System   Resources and Operations. 
当应用程序请求数据时,它会先向ElastiCache 缓存发出请求。 Whenever your application requests data, it first makes the request to the ElastiCache   cache. AmazonElastiCache :以下项目的最大数目:. Amazon ElastiCache  : The maximum number of the following items:. AWS免费套餐包含通过AmazonElastiCache 提供的750小时的微缓存节点。 AWS Free Tier includes 750hrs of Micro Cache Node with   Amazon ElastiCache  . AmazonElastiCache 不支持基于资源的策略。 Amazon Elastic File System   doesn't support resource-based policies. 如果数据在缓存中且最新,则ElastiCache 会将数据返回到应用程序。 If the data exists in the cache and is current, ElastiCache   returns the data to your application. AmazonElastiCache 在全球的多个区域中可用。 Amazon Elasticsearch   is available in 17 regions all around the world. 您需要为实例支付标准ElastiCache 使用费,直到您删除该实例。 You incur the   standard ElastiCache   usage fees for the  instance until you delete it. AWS通过其Elasticache 服务提供这两者的托管版本。 AWS provides a managed version of both these via its Elasticache   service. ElastiCache 支持两个被广泛采用的开源引擎-Memcached与Redis。ElastiCache   supports two open-source in-memory engines- Redis& Memcached.您还可以观看ElastiCache 视频以了解更多ElastiCache 客户使用案例。 You can also watch the ElastiCache   Videos for additional ElastiCache   customer use cases. ElastiCache 使用两到三个连接监控每个案例中的群集。ElastiCache   uses two to three of the connections to monitor the cluster in each case.跟所有AWS服务一样,亚马逊的ElastiCache 服务也是按需提供,用户只需支付所用资源的费用。 Like all AWS services, Amazon ElastiCache   is available on demand  and users pay only for the resources used. AmazonElastiCache 仅支持基于身份的策略(IAM策略)。 Amazon Elastic File System   supports only identity-based policies(IAM policies). 为了有效使用多个ElastiCache Memcached节点,您需要能够跨节点分布缓存键。 To effectively use multiple ElastiCache   Memcached nodes,  you need to be able to spread your cache keys across the nodes. AmazonElastiCache 将确保配置终端节点始终指向至少一个此类“目标”节点。 Amazon ElastiCache   will ensure that the Configuration Endpoint always  points to at least one such target node. 它不仅仅是像DynamoDB这样的键值存储,还有像AmazonElastiCache 这样的内存数据库,. It's not just a key-value store like  DynamoDB, but an in-memory database like   Amazon ElastiCache  . AmazonElastiCache 使PBS能够很轻易地部署和管理分布式Memcached环境。 Amazon ElastiCache   will make it very easy for PBS to deploy  and manage our distributed Memcached environment. 由于没有用到任何诸如DEBUGOGJECT的特权命令,因此它可以被应用到包括亚马逊ElastiCache 在内的任何系统之上。 Does not use any privileged commands like DEBUG OBJECT, so it can be used on any system, including Amazon's ElastiCache  . 尽管如此,对于ElastiCache 和DynamoDB这样的服务来说,免费套餐同时适用于新老客户,并且永远不会失效。 However, the free tier for services like ElastiCache   and DynamoDB apply to new or existing customers and never expire. 我们使用DynamoDB作为主数据存储,使用ElastiCache Redis作为前端”工程经理KuldeepChowhan表示。 We are using DynamoDB as a main data-store, fronting it with ElastiCache   for Redis” said Kuldeep Chowhan, Engineering Manager. 借助ElastiCache Redis,我们将调配的DynamoDB容量减少了90%,使总数据库成本降低了6倍。 With ElastiCache   for Redis we were able to decrease our provisioned  DynamoDB capacity by 90%, reducing total database cost by 6x. 对于每个AmazonElastiCache 资源(请参阅AmazonElastiCache 资源和操作),该服务都定义了一组API操作(请参阅操作)。 For each Amazon Elastic File System   resource(see Amazon Elastic File System   Resources and Operations),  the service defines a set of API operations(see Actions). AmazonElastiCache 是一种内存中键/值存储,位于您的应用程序和其访问的数据存储(数据库)之间。 Amazon ElastiCache   is an in-memory key/value store that sits between your application  and the data store(database) that it accesses. 
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