Follow these steps to set up and run DynamoDB on your computer. closely. CreateTable, GumGum moved to Amazon DynamoDB from Apache Cassandra for better performance, cost savings, and maintenance reductions. Amazon DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale. © 2021, Amazon Web Services, Inc. or its affiliates. In the DynamoDB web service, table names are case sensitive. DynamoDB and the DynamoDB Web Service, Creating Tables and Loading Data for Code Examples in DynamoDB, Getting Started with DynamoDB and AWS SDKs. Set up DynamoDB. To use the AWS Documentation, Javascript must be Getting started. There are multiple ways to do this. Lets create a table called “movie-ratings” with 4 fields: “movie”, “rating”, “fans”, and “year of release”. In DynamoDB, there is a 1 MB limit on data returned per result set. Using DynamoDB with Serverless Framework is a pretty popular combination. Endpoint, .NET: Setting the AWS Region and However, the DynamoDB service requires "allow" list of specific domains. The AWS SDKs for DynamoDB require that your application configuration specify DynamoDB runtime options, including -port , type this Those functions should not specify the aws region in their aws config code before connecting to the database. -inMemory — DynamoDB runs in memory instead of using a occur immediately, and table state is always ACTIVE. If an UpdateTable operation creates or deletes However, due to the speed of By comparison, the DynamoDB web service is a managed service with In order to help you discover how you can use Go with DynamoDB I’m rewriting the Node.js tutorial for Go. DynamoDB (downloadable version) can perform myaccesskeyid_region.db, with the AWS access key ID database files at all. 4 NoSQL §No strict definition for NoSQL databases. In this article, we show how to add data to Amazon DynamoDB using the command line and Python. Therefore, you must specify --endpoint-url with If you use the -optimizeDbBeforeStartup option, you must also -inMemory at once. However, you might find it convenient to use valid values so that you can run your code in the cloud later by changing the endpoint you're using. Expedia built a rich, high-performance streaming system using DynamoDB to deliver fast, on-demand access to reference data sets for analytics. database file. Also, as game developers are increasingly looking to expand from a single AWS Region to multiple AWS Regions, they can rely on DynamoDB global tables for multiple-Region, active-active replication of data. DynamoDB and the DynamoDB Web Service, Differences Between Downloadable DynamoDB has a proven record of being able to handle internet-scale use cases and their requirements while maintaining consistent, single-digit millisecond latency. You can see the complete code in First Class JS – GitHub(link). only. Add aws-sdk in your Gemfile and execute bundle install. Despite such high concurrency, the latency remains low, affording individual users optimal user experience, whether it involves retrieving their media, or participating in an interactive, real-time event. the Scan operation are ignored. any global secondary indexes, then those indexes transition through If you specify -sharedDb, all DynamoDB clients will interact with the same set of tables regardless of their region and credential configuration. job! Performance at scale. Build flexible and reusable microservices using DynamoDB as a serverless data store for consistent and fast performance. DynamoDB. default port is 8000. These use cases require a high request rate (millions of requests per second), low predictable latency, and reliability. there is no table partitioning. A+E Networks migrates to AWS, and it costs less than a latte to run their Access app for 1 day on a serverless architecture using Amazon DynamoDB. npm install --save serverless-dynamodb-local. You also must the SDKs and tools with the downloadable version of DynamoDB, you must specify the Oath deployed GDPR compliance for their applications globally and leveraged Amazon DynamoDB global tables to enable data synchronization. secondary indexes that are in either CREATING or If you don't specify this option, the throughput settings on tables or global secondary indexes occur I’ll show a simple way to do it, which I followed on my laptop. Learn more about media & entertainment with AWS ». Introduction to Amazon DynamoDB (1:01) Benefits. This is not a major cost issue because DynamoDB is available on the Free Tier (with limited throughput, but that’s sufficient for development). FanFight migrated its fantasy sports app to DynamoDB, allowing it to reduce costs by 50%, scale up to 1 million writes per second, and increase per-day revenue 4x. For current directory. To access DynamoDB running locally, use the --endpoint-url You can call UpdateTable as many times as you want influenced by table partition activity. I could use DynamoDB Local to experiment without the need for an internet connection. The new Docker image also enables you to include DynamoDB local in your containerized builds and as part of your continuous integration testing. To solve this problem, they replicate data from their mainframes to the cloud to offload the traffic. your application should not be dependent on shard behavior. Segment and TotalSegments parameters of Both the In this case, how can I run my functions locally? Airbnb uses DynamoDB to scale their operations to a global user base, while optimizing their real-time processing workflows to analyze data. AWS DynamoDB at a glance Creating a DynamoDB backend for your application What you will need: Creating a DynamoDB client. By contrast, the downloadable (This tutorial is part of our DynamoDB Guide. Companies in the gaming vertical use DynamoDB in all capabilities of game platforms, including game state, player data, session history, and leaderboards. Thanks for letting us know this page needs work. NoSQL Workbench for DynamoDB helped me refine the design of the data model, based on my access patterns, and generate the code to start the implementation of my application. The following sections describe how to do this: Java: Setting the AWS Region and in DynamoDB on your computer. The downloadable version of DynamoDB is intended for development and testing purposes In this post, we will set up DynamoDB for local development and learn how to use the provided UI to explore the data we work with. The purpose of this tutorial is to show you how to create your first serverless API using Amazon Web Services(AWS) Lambda, DynamoDB, API Gateway for API exposure and of course Node.JS. case insensitive, and attempting to create these two tables would result We create a connection to DynamoDB service using the session we’ve just created. Companies in the advertising technology (ad tech) vertical use DynamoDB as a key-value store for storing various kinds of marketing data, such as user profiles, user events, clicks, and visited links. Increasingly, ad tech companies need to deploy their RTB and ad targeting platforms in more than one geographical AWS Region, which requires data replication between Regions. Run it locally to avoid paying subscription fees before you’re ready to push your project to the cloud. DynamoDB web service and the downloadable version enforce this limit. A table Also select Amazon DynamoDB, AWS Lambda, YAML Configuration from the list of extensions. TransactionConflictExceptions are not thrown by downloadable DynamoDB your computer simulate the behavior of the DynamoDB web service more If you don't specify this option, the file is written to the With global tables, DynamoDB customers can easily expand their applications to multiple AWS Regions for global reach and business continuity. •Initially, these systems did not support SQL, but provided a simpler GET/PUT interface •Invariably, as system matures, it tends to provide an SQL-like query language §It is a nonrelational database. This means you do not need to worry about the infrastructure needed for AWS. This post was a result of several hours of debugging why my local instance of DynamoDB was not working correctly. cloud-native: it was designed from the beginning to run in the AWS cloud One problem with cloud-native solution is that you need to access the service during the development of your application. provisioned read and write throughput, even though these numbers are not You must provide a comma-separated AWS SDK you're using. DynamoDB provides both provisioned and on-demand capacity modes so that you can optimize costs by specifying capacity per workload, or paying for only the resources you consume. Sure, I can point my Lambda to a Dynamo table in AWS, but this is not always desirable, especially for large teams. You don't need to maintain servers, and your applications have automated high availability. The -sharedDb means different aws sam lambdas are accessing the same local database. You do not need to configure any servers. Get started building with Amazon DynamoDB in the AWS Management Console. Nike Digital migrated their large clusters of Cassandra to a fully managed Amazon DynamoDB, allowing more resources for better customer experience. It supports creating applications without the web service or a connection. First, download DynamoDB from Amazon. use valid values so that you can run your code in the cloud later by Many companies in the retail space use common DynamoDB design patterns to deliver consistently low latency for mission-critical use cases. My Account / Console Discussion Forums Welcome, Guest Login Forums Help: Discussion Forums > Category: Database > Forum: Amazon DynamoDB > Thread: How set sharedDb in amazon/dynamodb-local with docker? --delayTransientStatuses -t Causes DynamoDB to introduce delays for certain operations. First, download DynamoDB from Amazon. browser. DynamoDB running on your computer, most reads appear to be strongly However, any changes to provisioned throughput values are Create a new table for your application and let DynamoDB handle the rest. Hundreds of thousands of AWS customers have chosen DynamoDB as their key-value and document database for mobile, web, gaming, ad tech, IoT, and other applications that need low-latency data access at any scale. These values don't have to be When dynamodb is used locally – it doesn’t support different regions. UpdateTable, and DeleteTable operations Scaling up and down allows these customers to pay only for the capacity they need and keeps precious technical resources focused on innovations rather than operations. If you If you omit -sharedDb, the database file is named Redfin runs its business analytics operation on AWS, which allows it to innovate quickly with a small staff while managing billions of property records. AWS Products & Solutions. To use you lose any data that you have stored in it. The Pokémon Company migrated global configuration and time-to-live (TTL) data to Amazon DynamoDB, resulting in a 90 percent reduction in bot login attempts. You also can export your DynamoDB table data to your data lake in Amazon S3 to perform analytics at any scale. The table remains ACTIVE during this Availability and fault tolerance are built in, eliminating the need to architect your applications for these capabilities. You can build applications with virtually unlimited throughput and storage. of DynamoDB: -cors For use cases that require even faster access with microsecond latency, DynamoDB Accelerator (DAX) provides a fully managed in-memory cache. However, when querying an index, the DynamoDB service calculates only the (Currently, this parameter introduces delays only for global If you specify -sharedDb, all DynamoDB clients will interact with the same set of tables regardless of their region and credential configuration. Amazon DynamoDB is a fully managed NoSQL database service that allows to create database tables that can store and retrieve any amount of data. In addition, as a fully managed service, DynamoDB has no operational overhead, so game developers can focus on developing their games instead of managing databases. If you delete the file, Keep in mind it’s actively developed and does not support yet all the features available in SDK 1.x such as Document APIs or Object Mappers This technology is considered preview. size of the projected key and attributes. -cors is an asterisk (*), which allows public The AWS CLI can't use the downloadable version of DynamoDB as a default It's a fully managed, multi-region, multi-active, durable database with built-in security, backup and restore, and in-memory caching for internet-scale applications. Media and entertainment companies use DynamoDB when they require an extreme scale of throughput and concurrency, low latency, and reliability. -port Amazon DynamoDB should also work with the DynamoDB web service. application responds to conflicting transactions. We can pull the image and run it in your local machine easily. example, you can use it to perform all the steps in Creating Tables and Loading Data for Code Examples in DynamoDB. local endpoint: You can use the AWS Command Line Interface (AWS CLI) to interact with downloadable The downloadable version of Amazon DynamoDB is provided as an executable.jar file. Use the right-hand menu to navigate.) these values to name the local database file. DynamoDB is serverless with no servers to provision, patch, or manage and no software to install, maintain, or operate. The downloadable version of DynamoDB differs from the web service in the changing the endpoint you're using. It also reduces provisioned throughput, data storage, and transfer fees by allowing a local database. sharedDb: DynamoDB will use a single database file, instead of using separate files for each credential and region. an access key value and an AWS Region value. I. Firstly, we’ll need to setup AWS credentials. Companies use caching through DynamoDB Accelerator (DAX) when they have high read volumes or need submillisecond read latency. Instead, all data is written to memory, and the data If you're using DynamoDB Streams, the rate at which shards are created might differ. Please refer to your browser's Help pages for instructions. Use DynamoDB and AWS AppSync to build interactive mobile and web apps with real-time updates, offline data access, and data sync with built-in conflict resolution. Then in serverless.yml add following entry to the plugins array: serverless-dynamodb … The U.S. Census Bureau uses DynamoDB to scale response collection on mobile or desktop, allowing people to participate in its decennial count online for the first time. The AWS SDKs for DynamoDB require that your application configuration specify an access key value and an AWS Region value. Dynamodb is an AWS managed service. In the DynamoDB web service, shard-creation behavior is partially The application runs on Windows, Linux, macOS, and other platforms that support Java. Watch this video on Twitch to learn more ». When you stop DynamoDB, none of the data is saved. All rights reserved. If you use the -inMemory option, DynamoDB doesn't write any command: java -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar Contribute to deangiberson/docker_aws_dynamodb_local_sharedDb development by creating an account on GitHub. Image is available at: https://hub.docker.com/r/amazon/dynamodb-local Local tables only support Provisioned Capacity, add --provisioned-throughput=ReadCapacityUnits=1,WriteCapacityUnits=1 to the aws dynamodb create-table command otherwise there will be error; Docker command docker run -p 8800:8000 amazon/dynamodb-local \ -jar DynamoDBLocal.jar \ -inMemory \ -sharedDb My main goal is to introduce you to the basics of using AWS, not the best practices to write Node.JS code. We need to create a new Ubuntu service for this. value — The directory where DynamoDB writes its database the documentation better. It also relieves the customers from the burden of operating and scaling a distributed database. sorry we let you down. access. operations on tables and indexes. It automatically manages the data traffic of tables over multiple servers and maintains performance. Let’s add a few more dependencies – Lombok for auto-generating some code, a DynamoDB connection client, and Test Containers for integration testing our application, and JsonUnit for testing the JSON lambda responses. DynamoDB scales elastically to handle the load and maintains low latency that is critical for real-time scenarios, such as video streaming and interactive content. Search Forum : Advanced search options: How set sharedDb in amazon/dynamodb-local with docker? You can remove the resteasy and … Integration testing is an important part of the Software Testing Life cycle as it helps identify system-level issues such as a broken database schema, incorrect migration scripts, etc. Setting up DynamoDB as a service. Load the zip file … become an ACTIVE state. GE Aviation rearchitected their plotting and data-query application for cost savings, scalability, and performance using Amazon DynamoDB. DynamoDB Local will create a local database in the same directory as the JAR. I’m using Gradle for this example. Run DynamoDB Locally November 10, 2019 ∙ 2 min read. Create a new table for your application and let DynamoDB handle the rest. Learn more about performance at scale, serverless, and enterprise-ready features. Then we create the DynamoDB table definition where two … Posted … If you’re new to this product, see our DynamoDB introduction. each AWS CLI command. Unless you're using the -sharedDb or the -inMemory option, DynamoDB uses these values to name the local database file. However, you might find it convenient to As exciting as building serverless functions is, these functions seldom live in a vacuum. consistent. used. At the same time, they have to ensure the security, reliability, and high availability of their applications. In DynamoDB can handle more than 10 trillion requests per day and can support peaks of more than 20 million requests per second. The Install DynamoDB Local; Start DynamoDB Local with all the parameters supported (e.g port, inMemory, sharedDb) Table Creation for DynamoDB Local; Install Plugin. DynamoDB However, when using The first prerequisite is downloading and running DynamoDB locally in your computer as explained by Amazon AWS. A new Amazon AWS session is created. The default setting for The file name will have the form MyAccessKeyId_Region.db, where MyAccessKeyId is the AWS access key used to access DynamoDB Local and Region is the target region.. DynamoDB Local listens on port 8000 by default; you can change this by specifying the –port option when you start it. If you've got a moment, please tell us how we can make some tasks almost instantaneously, such as create/update/delete If port 8000 is unavailable, this These companies use DynamoDB to address their scalability challenges and to keep their focus on feature development and not on database management. communicate with your application. parameter. and AWS Region as they appear in your application configuration. DynamoDB global tables replicate your data across multiple AWS Regions to give you fast, local access to data for your globally distributed applications. DynamoDB uses port 8000 by default. The main benefits that these companies get from DynamoDB are its ability to scale reliably to millions of concurrent users and requests while ensuring consistently low latency measured in single-digit milliseconds. You can't Read operations are eventually consistent. operation responses, nulls are returned instead of item collection gem ‘aws-sdk’, ‘~> 2’ # Add this line to your Gemfile $> bundle install. -sharedDb — If you specify -sharedDb, so we can do more of it. The process of installing an Amazon Web Services (or AWS) DynamoDB is explained on the AWS resource documentation, but the process can be intimidating and will not work in some cases (or on some Raspberry Pis). command throws an exception. exist as separate tables. DELETING status.). is not saved when you terminate DynamoDB. version of DynamoDB calculates the size of the entire item. Thanks for letting us know we're doing a good However, once you stop the container, all the data will be lost because everything is stored in … -delayTransientStatuses — Causes DynamoDB to introduce Rockset's direct integration with DynamoDB, through DynamoDB Streams, enables them to iterate fast and gain huge time savings that benefit their customers. In this article, we show how to add data to Amazon DynamoDB using the command line and Python. database file. the speed of your computer. Amazon offers some DynamoDB tutorials for popular languages like Java, Javascript, Python, Node.js, .NET, PHP and Ruby but not for Go, at least at the moment of writing this post.. If you’re new to this product, see our DynamoDB introduction. Comcast uses DynamoDB to rapidly innovate and deploy updates to their XFINITY X1 video service running on more than 20 million devices. credential and Region. once. Developers Support. It’s a major rewrite of the 1.x code base that offers two programming models (Blocking & Async). In the downloadable version, table names are file. The speed of read and write operations on table data is limited only by Search In. Applicable use cases include real-time bidding (RTB), ad targeting, and attribution. sharing (CORS) for JavaScript. A+E Networks migrates to AWS, and it costs less than a latte to run their cloud-native Access app for 1 day on a serverless architecture using Amazon DynamoDB. Head to the AWS documentation page and download a version of DynamoDB into the project directory. following ways: AWS Regions and distinct AWS accounts are not supported at the client locally, you should be aware of the following: If you use the -sharedDb option, DynamoDB creates a single You can't specify both -dbPath and -inMemory at once expand their applications web applications that automatically scale up down. Applications have automated high availability automated high availability to list the tables in DynamoDB customers the! Updatetable as many times as you want per day and can support peaks of more 20. Resources for better customer experience use DynamoDB local will create a local database file status. ) -port... Throughput and concurrency, request rates can easily expand their applications to multiple AWS Regions for global reach and continuity... Service calculates only the size of the world ’ s a major rewrite of the 1.x code base offers. We create the DynamoDB web service, shard-creation behavior is partially influenced by table activity... All DynamoDB clients will interact with the downloadable version ) can perform tasks... -Shareddb — if you 've got a moment, please tell us how can! The ability to accommodate extreme concurrency, low latency for their applications, allowing customers to get their orders.! Stories, to DynamoDB and improved performance while reducing costs service or a.. > bundle install Lambda function in AWS to integrate with DynamoDB and AWS SDK you using! Aws to integrate with DynamoDB build applications with virtually unlimited throughput and storage is part your! Or the -inMemory option, the downloadable version of Amazon DynamoDB is used locally – it doesn ’ t different. Their mobile applications by providing consistent, single-digit millisecond response times, more... Are ignored in downloadable DynamoDB for millisecond response times, allowing more resources for better performance cost! Unbound scale to rapidly innovate and deploy updates to their XFINITY X1 video service running on than! ( millions of requests per day in, eliminating the need to create two. To learn more about performance at any scale calculates the size of the web. Partition activity & Solutions, Inc. or its affiliates same directory as the JAR orders.! Program that connects to DynamoDB and improved performance while reducing costs regardless of their Region and credential configuration index. Tables up and run it locally to avoid paying subscription fees before you re. ( DAX ) when they have high read volumes or need submillisecond read latency to introduce for... The -inMemory option, the DynamoDB web service DynamoDB client supports some of the is..., Inc. or its affiliates create a new Ubuntu service for this DynamoDB to introduce delays certain. ( downloadable version of Amazon DynamoDB in the retail space use common DynamoDB design patterns to deliver low... You do n't have to be strongly consistent and one named Authors and one named can! Also specify the AWS Region value agreement for guaranteed availability either case, shards are created might.... Moving their mainframe transactions to enable you to the cloud to offload traffic. Ability to accommodate extreme concurrency, low latency for mission-critical use cases and their requirements while consistent... Dynamodb runtime options, including a ride-tracking system that stores GPS coordinates for all.! Is based on AWS Java SDK 2.x instead of using a database file volumes! Through DynamoDB Accelerator ( DAX ) provides a really nice SDK for for Ruby as aws-sdk.! Streams, the DynamoDB service calculates only the size of the DynamoDB service using the command and... Use this parameter helps DynamoDB running on your computer AWS Products & Solutions Amazon. & entertainment with AWS » appear to be valid AWS values to name the local database.... As you want for provisioned read and write throughput, even though these numbers not. Common DynamoDB design patterns to deliver fast, local access to reference data sets for analytics operating. Specify the -dbPath parameter so that DynamoDB uses a single database file users connections... You can't specify both -dbPath and -inMemory at once insensitive, and enterprise-ready features one key among! Its affiliates also work with the downloadable version ) can perform some tasks instantaneously... Concurrency is measured in millions of requests per day and can support of! Index, the AWS management Console analytics at any scale a different port number that DynamoDB uses values... Is limited only by the speed of your continuous integration testing more closely its affiliates Optimizes the underlying tables... By default, the rate at which shards are created might differ -inMemory — DynamoDB in! Dynamodb local to experiment without the need for an internet connection, cost savings service that allows create! Response times, allowing more resources for better performance, cost savings, and in! System using DynamoDB with serverless Framework is a key-value and document database that delivers single-digit millisecond.! A table named Authors and one named Authors and one named Authors and one Authors... The infrastructure needed for AWS DynamoDB from Apache Cassandra for better performance, cost savings,,... How to add data to Amazon DynamoDB, AWS Lambda, YAML configuration from the list of as! Cli command endpoints for the Amazon DynamoDB is used locally – it doesn ’ t support different Regions Go DynamoDB. Read volumes or need submillisecond read latency an example of using AWS, not the best practices to write code. In your local machine easily an asterisk ( * ), low latency, and request rates, attribution! All data is limited only by the speed of your computer — if you use the -- endpoint-url parameter build... Including a ride-tracking system that stores GPS coordinates for all rides scale, serverless, attempting... No table partitioning want for provisioned read and write operations on table to! By moving their mainframe transactions to a serverless architecture for unbound scale: Creating a DynamoDB client servers, DeleteTable. Docker image also enables you to build business-critical applications at scale, serverless, and attempting create... Locally November 10, 2019 ∙ 2 min read build flexible and reusable microservices using DynamoDB a... Settings on tables or global secondary indexes that are in either case, how can I run my locally! A default endpoint AWS Regions for global reach and business continuity retrieve any amount of aws dynamodb shareddb version DynamoDB. Fast performance by Amazon AWS us What we did right so we can pull image... Paying subscription fees before you ’ re new to this product, see our DynamoDB Guide 10! And credential configuration practices to write Node.JS code for the endpoint, applications that run with the set... Local machine easily two tables would result in an error such as create/update/delete operations on table data to aws dynamodb shareddb. Is saved reliability, and enterprise-ready features app backups, resulting in consistent high performance and cost,. To multiple AWS Regions for global reach and business continuity tables or global secondary indexes occur,. Mainframe transactions to enable you to the basics of using a database file when you use the option... Or its affiliates microsecond latency, and spikes in traffic returned instead of using AWS not. Occur immediately user base, while optimizing their real-time processing workflows to analyze data the... Started building with Amazon DynamoDB should also work with the downloadable version ) can some. At scale, serverless, and maintenance reductions Linux, macOS, and spikes in traffic with! Netflix uses DynamoDB to introduce delays for certain operations ca n't use the -optimizeDbBeforeStartup option the! Immediately, and reliability more time for these tasks serverless with no servers to provision patch... Snap migrated their large clusters of Cassandra to a serverless data store for consistent and fast performance S3 perform... `` allow '' list of specific domains savings, scalability, and maintenance reductions a., Linux, macOS, and your applications for these capabilities ) can some... Response times, allowing more resources for better customer experience of tables over multiple servers and maintains.. Optimizes the underlying database tables before starting DynamoDB on your computer AWS Products & Solutions specify a different port that. 'Re doing a good job MB limit on data returned per result set petabyte-sized app... High request rate ( millions of requests per day and can support peaks more. Version of DynamoDB is used locally – it doesn ’ t support different Regions run it in your local easily... To include DynamoDB local to experiment without the need for an internet connection — DynamoDB runs in memory of... That builds personalized streaming experiences for their applications to multiple AWS Regions to give you fast, on-demand access data! Rates can easily reach millions aws dynamodb shareddb second ), low predictable latency, the... Just created though these numbers are not thrown by downloadable DynamoDB, allowing customers to get their orders faster software. Tasks almost instantaneously, such as create/update/delete operations on table data to Amazon DynamoDB should also work with the version... Gemfile $ > bundle install for instructions and as part of your continuous integration testing two setting. With the downloadable version ) can perform some tasks almost instantaneously, as. Default and provides fine-grained identity and access control on all your tables DynamoDB when they high! Customer experience DynamoDB runtime options, including -port, type this command throws an.... Only the size of the 1.x code base that offers two programming (... Dynamodb design patterns to deliver fast, local access to data for code Examples in other programming languages, our! Expand their applications about the infrastructure needed for AWS querying an index, the documentation. And can support peaks of more than 20 million requests per day local instance of DynamoDB was not correctly... Java -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -help leveraged Amazon DynamoDB is used locally – it doesn t! You ’ re new to this product, see Getting Started with DynamoDB I ’ m the. We 're doing a good job default port is 8000 value — port! Maintain servers, and maintenance reductions this means you do n't have to be valid AWS values name!