https://katiyarvipinknp.medium.com/how-to-cache-the-data-in-aws-lambda-function-using-node-js-use-tmp-storage-of-aws-lambda-2c7e1e01d923 const cachedItem = {}; // as you know, anything declared outside the event handler function is reused between invocations.
Author: Yvonne Lu
SQS subscribes to SNS topic
Resources: SNSTopic: Type: AWS::SNS::Topic Properties: TopicName: name KmsMasterKeyId: !ImportValue kms-key-id SQSQueue: Type: AWS::SQS::Queue SNSSubscription: Type: AWS::SNS::Subscription Properties: TopicArn: !Ref SNSTopicArn
Step function notes
Use step function to delay sns { “StartAt”: “Delay”, “Comment”: “Publish to SNS with delay”, “States”: { “Delay”: { “Type”:
REACT interview questions
What is “prop drilling” and how to prevent it pass the state as “props” through each nested component UseContext hook
React Hooks
Hooks can only be called inside React function components. Hooks can only be called at the top level of a
Okta SPA
Sign User into Okta using redirect model Github samples: https://github.com/okta/samples-js-react https://github.com/oktadev/okta-react-login-example https://github.com/okta/samples-js-react/tree/master/okta-hosted-login <–this one
Lambda inserting into SQS using message timer
https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/SQS.html#sendMessage-property const AWS = require(‘aws-sdk’); exports.handler = async (event, context) => { // Get the SQS client. const sqs =
Step function history event limitation
One approach to avoid the 25k history event limit is to add a choice state in your loop that takes
Step function wait 10 seconds after current time
{ “StartAt”: “Wait”, “States”: { “Wait”: { “Type”: “Wait”, “Seconds”: { “Value”: { “Fn::Sub”: “${current_time} + 10” } }, “Next”:
Lambda executing step function nodejs example
var aws = require(‘aws-sdk’) exports.handler = (event, context, callback) => { var params = { stateMachineArn: ‘arn:aws:states:us-east-1:1234567890:stateMachine:Helloworld’, input: JSON.stringify({}) };