amazon-dynamodb-streams

问题 I'm looking for a way to temporarily disable Lambda triggers on a DynamoDB. I want to be able do apply manual Updates on a table (e.g. such as importing data from a S3 backup) without the Lambda code being triggers. I tried the disable button next to the trigger in the lambda functions "Trigger" tab. I also tried to disable the whole Stream for the table. In both cases, when reactivating the trigger/stream all the trigger events (that happened, while they were deactivated) are executed then.

问题 I'm looking for a way to temporarily disable Lambda triggers on a DynamoDB. I want to be able do apply manual Updates on a table (e.g. such as importing data from a S3 backup) without the Lambda code being triggers. I tried the disable button next to the trigger in the lambda functions "Trigger" tab. I also tried to disable the whole Stream for the table. In both cases, when reactivating the trigger/stream all the trigger events (that happened, while they were deactivated) are executed then.

问题 I am using AWS-lambda handler to write a dynamoDB stream to mongoDB. I want to define the db connection outside of the handler so that the requests reuse the same connections, based on our expected throughput volume. The problem with the lambda containers will expire without disposing of the connections properly. Does anybody know of any good solutions for this problem? Essentially boils down to "I want to use connection pools without maxing out the connection limit" 回答1: When I faced with

问题 I don't know how to subscribe to changes in DynamoDB database. Let me show an example: User A sends a message (which is saved in the database) to User B and in the User B's app the message automatically appears. I know this is possible with recently released AWS AppSync, but I couldn't integrate it with Ionic (which I am using). However, there must be an alternative since AWS AppSync was released only at the end of 2017/beginning of 2018. I've also seen something called Streams in DynamoDB

问题 I don't know how to subscribe to changes in DynamoDB database. Let me show an example: User A sends a message (which is saved in the database) to User B and in the User B's app the message automatically appears. I know this is possible with recently released AWS AppSync, but I couldn't integrate it with Ionic (which I am using). However, there must be an alternative since AWS AppSync was released only at the end of 2017/beginning of 2018. I've also seen something called Streams in DynamoDB

问题 What is the easiest approach (easiest implies low number of service maintenance overhead. Would prefer server less approach if possible) to copy data from a DDB table in one account to another, preferably in server less manner (so no scheduled jobs using Data pipelines). I was exploring possibility of using DynamoDB streams, however this old answer mentions that is not possible. However, I could not find latest documentation confirming/disproving this. Is that still the case? Another option I

问题 We would like to move data from DynamoDB NoSQL into Redshift Database continously as a stream. I am having hard time understand all the new terms/technologies in AWS. There is 1) DynamoDB Streams 2) AWS Lambda 3) AWS Kinesis Firehose Can someone provide a brief summary of each. What are DynamoDB streams? How does this differ from AmazonKinesis? After reading all the resources, this is my hypothesis understanding, please verify below. (a) I assume DynamoDB Streams, create the streaming data of

问题 I've a Dynamodb table with streaming enabled. Also I've created a trigger for this table which calls an AWS Lambda function. Within this lambda function, I'm trying read the new image (Dynamodb item after the modification) from the Dynamodb stream and trying to get the pure json string out of it. My Question is how can i get the pure json string of the DynamoDB item that's been sent over the stream? I'm using the code snippet given below to get the new Image, but I've no clue how to get the

问题 I want to do an incremental DynamoDB backup on S3 using DynamoDB Streams. I have a lambda that reads the dynamodb stream and writes files into S3. In order to mark already read shards I have ExclusiveStartShardId logged into configuration file. What I do is: Describe the stream (using the logged ExclusiveStartShardId) Get stream's shards For all shards that are CLOSED (has EndingSequenceNumber) I do the following: Get shard iterator for the certain shard (shardIteratorType: 'TRIM_HORIZON')

问题 I want to use DynamoDB Streams + AWS Lambda to process chat messages. Messages regarding the same conversation user_idX:user_idY (a room) must be processed in order. Global ordering is not important. Assuming that I feed DynamoDB in the correct order (room:msg1, room:msg2, etc), how to guarantee that the Stream will feed AWS Lambda sequentially, with guaranteed ordering of the processing of related messages (room) across a single stream ? Example, considering I have 2 shards, how to make sure