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(Created page with "= Javascript = * timestamps * try/catch/finally blocks * environment variables * validating function params or external data before use == async/await == = Node = == npm == = AWS = AWS offers a free tier, you can create an account and use most services at a limited level for free for one year, then cancel the account (or stop all services) before the year is over. == Serverless Framework (sls) == * https://www.serverless.com/framework/docs * We use the Serverless...") |
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* Understand how partition(hash) and sort(range) keys work, why they are used | * Understand how partition(hash) and sort(range) keys work, why they are used | ||
=== Pagination === | |||
* If there is the chance a query can return a large amount of data we need to paginate query results | |||
* Receive a subset of all results and process them, then eg re-invoke the Lambda to process the next set of results | |||
* messy notes: [[2021-05-03 - DynamoDB pagination]] | |||
== SNS == | == SNS == | ||
| Line 39: | Line 45: | ||
=== SNS/SQS Message delivery === | === SNS/SQS Message delivery === | ||
* [[Communication between services]] | |||
* some messy notes: [[2020-11-08 - Communication Between Services Ideas]] | |||
=== SQS Batch processing === | |||
* [[2020-11-28 - Handling Message Batches from SQS Queues]] | |||
== API Gateway == | == API Gateway == | ||
=== API Gateway Authorizer Lambda Functions === | === API Gateway Authorizer Lambda Functions === | ||
[[API Gateway Authorizers]] | |||
=== Websockets === | === Websockets === | ||
| Line 53: | Line 68: | ||
== Idempotence == | == Idempotence == | ||
* messy notes: [[2021-05-03 Idempotence ideas]] | |||
* some notes about idempotent Lambda processing: [[2020-11-28 - Handling Message Batches from SQS Queues]] | |||
== Immutable Data == | == Immutable Data == | ||
| Line 88: | Line 106: | ||
== Microfrontends == | == Microfrontends == | ||
* see messy notes and references at [[2021-01-31 - Micro Frontends]] | |||
Revision as of 13:51, 4 October 2022
Javascript
- timestamps
- try/catch/finally blocks
- environment variables
- validating function params or external data before use
async/await
Node
npm
AWS
AWS offers a free tier, you can create an account and use most services at a limited level for free for one year, then cancel the account (or stop all services) before the year is over.
Serverless Framework (sls)
- https://www.serverless.com/framework/docs
- We use the Serverless Framework to deploy AWS resources
- We do not use the Serverless hosted dashboard
- Learn the basic concepts of Serverless Framework but do not need to learn everything, we use only some elements of the framework and have a standard template for the AWS resources we use
Lambda
Lambda container persistence
- Lambda environments are not discarded after each use, they can be reused for multiple invocations
- We can use this to maintain global variables, such as database connections
DynamoDB
- Understand how partition(hash) and sort(range) keys work, why they are used
Pagination
- If there is the chance a query can return a large amount of data we need to paginate query results
- Receive a subset of all results and process them, then eg re-invoke the Lambda to process the next set of results
- messy notes: 2021-05-03 - DynamoDB pagination
SNS
SQS
SNS/SQS Message delivery
SQS Batch processing
API Gateway
API Gateway Authorizer Lambda Functions
Websockets
S3
Design Concepts
Race Conditions
Idempotence
- messy notes: 2021-05-03 Idempotence ideas
- some notes about idempotent Lambda processing: 2020-11-28 - Handling Message Batches from SQS Queues
Immutable Data
Microservices
Middleware
- especially for Lambda functions
Izara Backend
Services to study
Project Concepts
Information in the below pages should be understood before developing:
- Repository structure
- Git development
- Syntax - Backend services
- Remote repository and workspace structure
- Communication between services
- Lambda handler functions
- Idempotence and Race Conditions
- Standard Config Table Per Service
Izara Frontend
React
Microfrontends
- see messy notes and references at 2021-01-31 - Micro Frontends