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Notes from AppSync sessions @ Re:Invent 2020

Notes from AppSync sessions @ Re:Invent 2020 More like Re:Mote 2020 Notes from Unify access to siloed data with AWS AppSync GraphQL resolvers by Nader Dabit Three types of AppSync Resolvers: Direct (directly map a GraphQL operation into a data source - DynamoDB, ElasticSearch or Aurora Serverless…

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Velocity Template Language 101

Velocity Template Language 101 Source Creating variables #set( $a = "Velocity" ) The following rule of thumb may be useful to better understand how Velocity works: References begin with $ and are used to get something. Directives begin with # and are used to do something. Comments ## This is a…

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Notes from Data modeling with Amazon DynamoDB – Part 2 with Alex DeBrie

Check out the notes from part 1 here Data modeling process Understand your application First of all, make sure you really understand your application. This is true for both relational and non-relational databases, in order to model data properly you need to have a deep understanding of your…

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Notes from Data modeling with Amazon DynamoDB – Part 1 with Alex DeBrie

Notes from Data modeling with Amazon DynamoDB – Part 1 with Alex DeBrie DynamoDB basics: Table - a collection of data (similar to a table in a relational database) Item - an individual record in a DynamoDB table (similar to a row in a relational database) Primary Key - whenever you create a DynamoDB…

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The truth about cookies, tokens and APIs - Phillipe de Ryck

Notes from The truth about cookies, tokens and APIs - Phillipe de Ryck Old way: Send an auth request to the server -> get a cookie -> request a resource with that cookie ( Cookie: ID=123 ) The session info is stored in a server side object New way: Send an auth request to the server -> get a…

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Deconstructing "The EventBridge ETL" CDK Pattern

The EventBridge ETL This blogpost is a quick summary of Deconstructing "The EventBridge ETL" AWS Serverless Architecture Pattern by Matt Coulter Check out the pattern here: https://github.com/cdk-patterns/serverless/tree/master/the-eventbridge-etl Or clone it by running: Components: S3 AWS…

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10 quick facts about AWS Lambda

By default there's a limit of 1000 concurrent lambda executions, this can be raised with a support ticket. There are companies that have this limit raised up to tens of thousands concurrent lambda executions. There's a default limit of 75GB of code storage (so up to 10 React apps, lol) which can…

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Tomasz Łakomy © 2020