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Lambda (CLI (aws lambda help, aws lambda get-function help, view…
Lambda
CLI
aws lambda help
aws lambda get-function help
view CloudWatch log
aws logs describe-log-groups
pull & push event
invoke function
aws lambda invoke
Test locally with SAM CLI
start-api
invoke
generate-event
valiate
package and deploy
AWS service can invoke lambda
EC2
DynamoDB
S3
etc...
Invoke Lambda
Invocation type
Synchronous
invocation
Asynchronous
invocation
Predetermined invocation type(
cannot change
)
Event model
Push
Pull
Event source mapping
Concurrency
Non-Streaming based service(event per second * function duration)
Stream based service(each active
shard
as one concurrent execution)
Throttling
concurrency
Reserve concurrency
Scale concurrency(AWS automatically)
Create a function
Console
CLI
SAM
Logging&monitoring
CloudWatch
X-Ray
Test execution console
Limit & Retries
Limit
Resource limit per invocation
Account limits per region (1000 concurrency executions)
Deployment limits
Retries
Synchronous
Failures (429 error)
Asynchronous
Failure(retry twice then send to Dead Letter Queue)
Stream-based Failures
CloudWatch Event
Event pattern(JSON)
Event
Target
Rules
Scheduled expression
Rate expression
Cron expression