Awesome

AWS Lambda Cheatsheet

<h3>This cheatsheet is probably based on Python</h3> <table> <tr> <th colspan="4">Runtime Versions</th> </tr> <tr> <th>Type</th> <th>Versions</th> <th>AWS SDK</th> <th>Operating System</th> </tr>  <tr> <td rowspan="2">Node.js</td> <td>nodejs10.x</td> <td>(JavaScript) 2.712.0</td> <td>Amazon Linux 2</td> </tr> <tr> <td>nodejs12.x</td> <td>(JavaScript) 2.712.0</td> <td>Amazon Linux 2</td> </tr>  <tr> <td rowspan="3">Java</td> <td>java11</td> <td>(JDK) amazon-corretto-11</td> <td>Amazon Linux 2</td> </tr> <tr> <td>java8.a12</td> <td>(JDK) amazon-corretto-8</td> <td>Amazon Linux 2</td> </tr> <tr> <td>java8</td> <td>(JDK) java-1.8.0-openjdk</td> <td>Amazon Linux</td> </tr>  <tr> <td rowspan="4">Python</td> <td>python3.8</td> <td>(Python) boto3-1.14.40 botocore-1.17.40</td> <td>Amazon Linux 2</td> </tr> <tr> <td>python3.7</td> <td>(Python) boto3-1.14.40 botocore-1.17.40</td> <td>Amazon Linux</td> </tr> <tr> <td>python3.6</td> <td>(Python) boto3-1.14.40 botocore-1.17.40</td> <td>Amazon Linux</td> </tr> <tr> <td>python2.7</td> <td>(Python) boto3-1.14.40 botocore-1.17.40</td> <td>Amazon Linux</td> </tr>  <tr> <td rowspan="2">Ruby</td> <td>ruby2.7</td><td>(Ruby) 3.0.3</td> <td>Amazon Linux 2</td> </tr> <tr> <td>ruby2.5</td> <td>(Ruby) 3.0.3</td> <td>Amazon Linux</td> </tr>  <tr> <td rowspan="2">.NET Core</td> <td>dotnetcore3.1</td> <td>--</td> <td>Amazon Linux 2</td> </tr> <tr> <td>dotnetcore2.1</td> <td>--</td> <td>Amazon Linux</td> </tr>  <tr> <td>Go</td> <td>go1.x</td> <td>--</td> <td>Amazon Linux</td> </tr>  <tr> <td rowspan="2">Custom Runtime</td> <td>provided.al2</td> <td>--</td> <td>Amazon Linux 2</td> </tr> <tr> <td>provided</td> <td>--</td> <td>Amazon Linux</td> </tr> </table> <table> <tr> <th colspan="4">Available Operating System</th> </tr> <tr> <th>Type</th> <th>Image</th> <th>Kernel</th> </tr> <tr> <td>Amazon Linux</td> <td>amzn-ami-hvm-2018.03.0.20181129-x86_64-gp2</td> <td>4.14.171-105.231.amzn1.x86_64</td> </tr> <tr> <td>Amazon Linux 2</td> <td>Custom</td> <td>4.14.165-102.205.amzn2.x86_64</td> </tr> </table> <table> <tr> <th colspan="3">Settings | Limits</th> </tr> <tr> <th>Description</th> <th>Settings | Limits | Explained</th> <th>Can be increased</th> </tr> <tr> <td> Writable Path & Space </td> <td>/tmp/ 512 MB</td> <td>--</td> </tr> <tr> <td>Default Memory & Execution Time</td> <td>128 MB Memory 3 Second Timeout</td> <td>--</td> </tr> <tr> <td>Max Memory & Execution Time</td> <td>10,240 MB (1 MB increments) 900 seconds (15 Minutes) Timeout</td> <td>--</td> </tr> <tr> <td>Number of processes and threads (Total)</td> <td>1024</td> <td>--</td> </tr> <tr> <td>Number of File descriptors (Total)</td> <td>1024</td> <td>--</td> </tr> <tr> <td>Maximum deployment package size</td> <td> 50 MB (zipped, direct upload) 250 MB (unzipped, including layers) </td> <td>--</td> </tr> <tr> <td><a href="https://youtu.be/23fE57EFRK4">Container image</a> code package size</td> <td> 10 GB </td> <td>--</td> </tr> <tr> <td>Maximum deployment package size for console editor</td> <td>3 MB</td> <td>--</td> </tr> <tr> <td>Total size of deployment package per region</td> <td>75 GB</td> <td>Can be increased upto Terabytes</td> </tr> <tr> <td>Maximum size of environment variables set</td> <td>4 KB</td> <td>--</td> </tr> <tr> <td>Maximum function Layers</td> <td>5 layers</td> <td>--</td> </tr> <tr> <td>Environment variables size</td> <td>4 KB</td> <td>--</td> </tr> <tr> <td>Maximum test events (Console editor)</td> <td>10</td> <td>--</td> </tr> <tr> <td>Invocation payload Limit (request and response)</td> <td>6 MB (synchronous) 256 KB (asynchronous)</td> <td>--</td> </tr> <tr> <td>Elastic network interpaces per VPC</td> <td>250</td> <td>Can be increased upto Hundreds</td> </tr> <tr> <td>Lambda Destinations</td> <td> <ul> <li>It sends invocation records to a destination (SQS queue, SNS topic, Lambda function, or EventBridge event bus) when the lambda function is invoked asynchronously</li> <li>It also supports stream invocation</li> </ul> </td> <td>Can be increased upto Hundreds</td> </tr> <tr> <td>Monitoring tools</td> <td> <ul> <li>(Default) CloudWatch Logs stream</li> <li>AWS X-Ray</li> <li>CloudWatch Lambda Insights (preview)</li> </ul> </td> <td>--</td> </tr> <tr> <td>VPC</td> <td> <ul> <li>When you enable VPC, your Lambda function will lose default internet access</li> <li>If you require external internet access for your function, ensure that your security group allows outbound connections and that your VPC has a NAT gateway</li> </ul> </td> <td>--</td> </tr> <tr> <td>Concurrency</td> <td> <ul> <li>Concurrent Execution refers to the execution of number of function at a given time. By default the limit is 1000 across all function within a given region</li> <li>AWS Lambda keeps 100 for the unreserved function</li> <li>So, if there are 1000 then you can select from 900 and reserve concurrency for selected function and rest 100 is used for the unreserved function</li> </ul> <td>Can be increased upto Hundreds of thousands</td> </tr> <tr> <td>DLQ (Dead Letter Queue)</td> <td> <ul> <li>Failed Lambda is invoked twice by default and the event is discarded</li> <li>DLQ instruct lamnda to send unprocessed events to AWS SQS or AWS SNS</li> <li>DLQ helps you troubleshoot and examine the unprocessed request</li> </ul> <td>--</td> </tr> <tr> <td>Throttle</td> <td> <ul> <li>Throttle will set reserved concurrency of the function to zero and it will throttle all future invocation</li> <li>If the function is throttled then it will fail to run</li> <li>If the fucntion is ran from Lambda console then it will throw "Calling the Invoke API failed with message: Rate Exceeded."</li> </ul> <td>--</td> </tr> <tr> <td>File system</td> <td> <ul> <li><a href="https://www.youtube.com/playlist?list=PL5KTLzN85O4L0rYTtGVKxPr4yQ5oHMYOn">File system</a> will allow you to add Amazon EFS file system, which provides distributed network storage for the instances of the function</li> <li>To connect to the file system, you need to connect your lambda function to VPC</li> </ul> <td>--</td> </tr> <tr> <td>State machines</td> <td> <ul> <li>Step Functions state machines which orchestrate this function</li> <li>The Step Functions state machines page lists all state machines in the current AWS region with at least one workflow step that invokes a Lambda function</li> </ul> <td>--</td> </tr> <tr> <td>Database proxies</td> <td> <ul> <li>Database proxy manages a pool of database connections and relays queries from a function</li> <li>It uses Secrets Manager secret to access credentials for a database</li> <li>To connect to the file system, you need to connect your lambda function to VPC</li> </ul> <td>--</td> </tr> </table> <table> <tr> <th colspan=2>Execution Role (Common Execution Role Available)</th> </tr> <tr> <td>AWSLambdaBasicExecutionRole</td> <td>Grants permissions only for the Amazon CloudWatch Logs actions to write logs.</td> </tr> <tr> <td>AWSLambdaKinesisExecutionRole</td> <td>Grants permissions for Amazon Kinesis Streams actions, and CloudWatch Logs actions.</td> </tr> <tr> <td>AWSLambdaDynamoDBExecutionRole</td> <td>Grants permissions for DynamoDB streams actions and CloudWatch Logs actions.</td> </tr> <tr> <td>AWSLambdaVPCAccessExecutionRole</td> <td>Grants permissions for Amazon Elastic Compute Cloud (Amazon EC2) actions to manage elastic network interfaces (ENIs).</td> </tr> <tr> <td>AWSXrayWriteOnlyAccess</td> <td>Grants permission for X-ray to to upload trace data to debug and analyze.</td> </tr> </table> Add new permission

import boto3
client = boto3.client('lambda')

# Role ARN can be found on the top right corner of the Lambda function
response = client.add_permission(
    FunctionName='string',
    StatementId='string',
    Action='string',
    Principal='string',
    SourceArn='string',
    SourceAccount='string',
    EventSourceToken='string',
    Qualifier='string'
)

<table> <tr> <th colspan="2">Execution | Invoke | Tweaks</th> </tr> <tr> <td>A Lambda can invoke another Lambda</td> <td><a href="https://youtu.be/5QwrseYLwNM">Yes</a></td> </tr> <tr> <td>A Lambda in one region can invoke another lambda in other region</td> <td>Yes</td> </tr> <tr> <td>A Lambda can invoke same Lambda</td> <td>Yes</td> </tr> <tr> <td>Exceed 15 minutes execution time</td> <td>Yes (Can Tweak around)</td> </tr> <tr> <td>How to exceed 5 minutes execution time</td> <td> <a href="http://www.thetechnologyupdates.com/aws-lambda-going-beyond-5-minutes-execution/">Self-Invoke</a> , SNS, SQS</td> </tr> <tr> <td>Asynchronous Execution</td> <td>Yes <a href="http://www.thetechnologyupdates.com/aws-lambda-execute-lambda-asynchronously-parallel/">(Async Exec)</a></td> </tr> <tr> <td>Invoke same Lamba with different version</td> <td>Yes</td> </tr> <tr> <td>Setting Lambda Invoke Max Retry attempt to 0</td> <td><a href="https://youtu.be/ySVz-9EOKbw">Yes</a></td> </tr> </table> <table> <tr> <th>Triggers</th> <th>Description</th> <th>Requirement</th> </tr> <tr> <td>API Gateway</td> <td>Trigger AWS Lambda function over HTTPS</td> <td>API Endpoint name API Endpoint Deployment Stage Security Role</td> </tr> <tr> <td>AWS IoT</td> <td>Trigger AWS Lambda for performing specific action by mapping your AWS IoT Dash Button (Cloud Programmable Dash Button)</td> <td>DSN (Device Serial Number)</td> </tr> <tr> <td>Alexa Skill Kit</td> <td>Trigger AWS Lambda to build services that give new skills to Alexa</td> <td>--</td> </tr> <tr> <td>Alexa Smart Home</td> <td>Trigger AWS Lambda with desired skill</td> <td>Application ID (Skill)</td> </tr> <tr> <td>Application Load Balancer</td> <td>Trigger AWS Lambda from ALB</td> <td>Application Load Balancer Listener (It is the port that ALP receivce traffice) Host Path</td> </tr> <tr> <td>CloudFront</td> <td>Trigger AWS Lambda based on difference CloudFront event.</td> <td>CloudFront distribution, Cache behaviour, CloudFront event (Origin request/response, Viewer request/response). To set CloudFront trigger, one need to publish the version of Lambda. Limitations: Runtime is limited to Node.js 6.10 /tmp/ space is not available Environment variables, DLQ & Amazon VPC's cannot be used</td> </tr> <tr> <td>CloudWatch Events</td> <td>Trigger AWS Lambda on desired time interval (rate(1 day)) or on the state change of EC2, RDS, S3, Health.</td> <td>Rule based on either Event Pattern (time interval) Schedule Expression (Auto Scaling on events like Instance launch and terminate AWS API call via CloudTrail</td> </tr> <tr> <td>CloudWatch Logs</td> <td>Trigger AWS Lambda based on the CloudWatch Logs</td> <td>Log Group Name</td> </tr> <tr> <td>Code Commit</td> <td>Trigger AWS Lambda based on the AWS CodeCommit version control system</td> <td>Repository Name Event Type</td> </tr> <tr> <td>Cognito Sync Trigger</td> <td>Trigger AWS Lambda in response to event, each time the dataset is synchronized</td> <td>Cognito Identity Pool dataset</td> </tr> <tr> <td>DynamoDB</td> <td>Trigger AWS Lambda whenever the DynomoDB table is updated</td> <td>DynamoDB Table name Batch Size(The largest number of records that AWS Lambda will retrieve from your table at the time of invoking your function. Your function receives an event with all the retrieved records)</td> </tr> <tr> <td>Kinesis</td> <td>Trigger AWS Lambda whenever the Kinesis stream is updated</td> <td>Kinesis Stream Batch Size</td> </tr> <tr> <td>S3</td> <td>Trigger AWS Lambda in response to file dropped in S3 bucket</td> <td>Bucket Name Event Type (Object Removed, Object Created)</td> </tr> <tr> <td>SNS</td> <td>Trigger AWS Lambda whenever the message is published to Amazon SNS Topic</td> <td>SNS Topic</td> </tr> <tr> <td>SQS</td> <td>Trigger AWS Lambda on message arrival in SQS</td> <td>SQS queue Batch size Limitation: It only works with Standard queue and not FIFO queue</td> </tr> </table> <table> <tr> <th colspan="3">Troubleshooting</th> </tr> <tr> <th>Error</th> <th>Possible Reason</th> <th>Solution</th> </tr> <tr> <td> File "/var/task/lambda_function.py", line 2, in lambda_handler return event['demoevent'] KeyError: 'demoevent' </td> <td> Event does not have the key 'demoevent' or either misspelled </td> <td> Make sure the event is getting the desired key if it is receiving the event from any trigger. Or if the not outside event is passed than check for misspell. Or check the event list by printing event. </td> </tr> <tr> <td>botocore.exceptions.ClientError: An error occurred (AccessDeniedException) when calling the GetParameters operation: User: arn:aws:dummy::1234:assumed-role/role/ is not authorized to perform: ssm:GetParameters on resource: arn:aws:ssm:dummy</td> <td>Lacks Permission to access</td> <td>Assign appropriate permission for accessibility</td> </tr> <tr> <td>ImportError: Missing required dependencies [‘module']</td> <td>Dependent module is missing</td> <td>Install/Upload the required module</td> </tr> <tr> <td>sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) could not translate host name "host.dummy.region.rds.amazonaws.com" to address: Name or service not known</td> <td>RDS Host is unavailable</td> <td>Make sure the RDS instance is up and running. Double check the RDS hostname</td> </tr> <tr> <td>[Errno 32] Broken pipe</td> <td>Connection is lost (Either from your side or may be some problem from AWS) While invoking another Lambda, if the payload size exceed the mentioned limit</td> <td>Make sure if you are passing the payload of right size. Check for the connection.</td> </tr> <tr> <td>Unable to import module ‘lambda_function/index’ No module named ‘lambda_function'</td> <td>Handler configuration is not matching the main file name</td> <td>Update the handler configuration as per your filename.function_name</td> </tr> <tr> <td>OperationalError: (psycopg2.OperationalError) terminating connection due to administrator command SSL connection has been closed unexpectedly</td> <td>RDS/Database System has been rebooted. In a typical web application using an ORM (SQLAlchemy) Session, the above condition would correspond to a single request failing with a 500 error, then the web application continuing normally beyond that. Hence the approach is “optimistic” in that frequent database restarts are not anticipated.</td> <td>Give second try</td> </tr> <tr> <td>Error code 429</td> <td>The function is throttled. Basically the reserved concurrency is set to zero or it have reach the account level throttle. (The function that is invoked synchronous and if it is throttled then it will return 429 error. If the lambda function is invoked asynchronously and if it is throttled then it will retry the throttled event for upto 6 hours.) </td> <td>Check for the reserved concurrency limit or throttle status for the individual function. Or check for the account level concurrent execution limit</td> </tr> </table> <h3>AWS Lambda CLI commands</h3> Add Permission It add mention permission to the Lambda function Syntax

  add-permission
--function-name <value>
--statement-id <value>
--action <value>
--principal <value>
[--source-arn <value>]
[--source-account <value>]
[--event-source-token <value>]
[--qualifier <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

add-permission --function-name functionName --statement-id role-statement-id --action lambda:CreateFunction --principal s3.amazonaws.com

Create Alias It creates alias for the given Lambda function name Syntax

  create-alias
--function-name <value>
--name <value>
--function-version <value>
[--description <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

create-alias --function-name functionName --name fliasName --function-version version

Create Event Source Mapping It identify event-source from Amazon Kinesis stream or an Amazon DynamoDB stream

  create-event-source-mapping
--event-source-arn <value>
--function-name <value>
[--enabled | --no-enabled]
[--batch-size <value>]
--starting-position <value>
[--starting-position-timestamp <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

create-event-source-mapping --event-source-arn arn:aws:kinesis:us-west-1:1111 --function-name functionName --starting-position LATEST

Create Function It creates the new function Syntax

  create-function
--function-name <value>
--runtime <value>
--role <value>
--handler <value>
[--code <value>]
[--description <value>]
[--timeout <value>]
[--memory-size <value>]
[--publish | --no-publish]
[--vpc-config <value>]
[--dead-letter-config <value>]
[--environment <value>]
[--kms-key-arn <value>]
[--tracing-config <value>]
[--tags <value>]
[--zip-file <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

create-function --function-name functionName --runtime python3.6 --role arn:aws:iam::account-id:role/lambda_basic_execution
 --handler main.handler

Delete Alias It deletes the alias Syntax

  delete-alias
--function-name <value>
--name <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

delete-alias --function-name functionName --name aliasName

Delete Event Source Mapping It deletes the event source mapping Syntax

  delete-event-source-mapping
--uuid <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

delete-event-source-mapping --uuid 12345kxodurf3443

Delete Function It will delete the function and all the associated settings Syntax

  delete-function
--function-name <value>
[--qualifier <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

delete-function --function-name FunctionName

Get Account Settings It will fetch the user’s account settings Syntax

  get-account-settings
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Get Alias It returns the desired alias information like description, ARN Syntax

  get-alias
--function-name <value>
--name <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

get-alias --function-name functionName --name aliasName

Get Event Source Mapping It returns the config information for the desired event source mapping Syntax

  get-event-source-mapping
--uuid <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

get-event-source-mapping --uuid 12345kxodurf3443

Get Function It returns the Lambda Function information Syntax

  get-function
--function-name <value>
[--qualifier <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

get-function --function-name functionName

Get Function Configuration It returns the Lambda function configuration Syntax

  get-function-configuration
--function-name <value>
[--qualifier <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

  get-function-configuration --function-name functionName

Get Policy It return the linked policy with Lambda function Syntax

  get-policy
--function-name <value>
[--qualifier <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

get-policy --function-name functionName

Invoke It invoke the mention Lambda function name <Syntax/p>

  invoke
--function-name <value>
[--invocation-type <value>]
[--log-type <value>]
[--client-context <value>]
[--payload <value>]
[--qualifier <value>]

Example

invoke --function-name functionName

List Aliases It return all the aliases that is created for Lambda function Syntax

  list-aliases
--function-name <value>
[--function-version <value>]
[--marker <value>]
[--max-items <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

  list-aliases --function-name functionName

List Event Source Mappings It return all the list event source mappings that is created with create-event-source-mapping Syntax

  list-event-source-mappings
[--event-source-arn <value>]
[--function-name <value>]
[--max-items <value>]
[--cli-input-json <value>]
[--starting-token <value>]
[--page-size <value>]
[--generate-cli-skeleton <value>]

Example

  list-event-source-mappings --event-source-arn arn:aws:arn --function-name functionName

List Functions It return all the Lambda function Syntax

  list-functions
[--master-region <value>]
[--function-version <value>]
[--max-items <value>]
[--cli-input-json <value>]
[--starting-token <value>]
[--page-size <value>]
[--generate-cli-skeleton <value>]

Example

  list-functions --master-region us-west-1 --function-version ALL

List Tags It return the list of tags that are assigned to the Lambda function Syntax

  list-tags
--resource <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

  list-tags --resource arn:aws:function

List Versions by functions It return all the versions of the desired Lambda function Syntax

  list-versions-by-function
--function-name <value>
[--marker <value>]
[--max-items <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

list-versions-by-function --function-name functionName

Publish Version It publish the version of the Lambda function from $LATEST snapshot Syntax

  publish-version
--function-name <value>
[--code-sha-256 <value>]
[--description <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

  publish-version --function-name functionName

Remove Permission It remove the single permission from the policy that is linked with the Lambda function Syntax

 remove-permission
--function-name <value>
--statement-id <value>
[--qualifier <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

 remove-permission --function-name functionName --statement-id role-statement-id

Tag Resource It creates the tags for the lambda function in the form of key-value pair Syntax

  tag-resource
--resource <value>
--tags <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

tag-resource --resource arn:aws:arn --tags {‘key’: ‘pair’}

Untag Resource It remove tags from the Lambda function Syntax

 untag-resource
--resource <value>
--tag-keys <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

untag-resource --resource arn:aws:complete --tag-keys [‘key1’, ‘key2’]

Update Alias It update the alias name of the desired lambda function Syntax

  update-alias
--function-name <value>
--name <value>
[--function-version <value>]
[--description <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

update-alias --function-name functionName --name aliasName

Update Event Source Mapping It updates the event source mapping incase you want to change the existing parameters Syntax

  update-event-source-mapping
--uuid <value>
[--function-name <value>]
[--enabled | --no-enabled]
[--batch-size <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

update-event-source-mapping --uuid 12345kxodurf3443

Update Function Code It updates the code of the desired Lambda function Syntax

  update-function-code
--function-name <value>
[--zip-file <value>]
[--s3-bucket <value>]
[--s3-key <value>]
[--s3-object-version <value>]
[--publish | --no-publish]
[--dry-run | --no-dry-run]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

update-function-code --function-name functionName

Update Function Configuration It updates the configuration of the desired Lambda function Syntax

  update-function-configuration
--function-name <value>
[--role <value>]
[--handler <value>]
[--description <value>]
[--timeout <value>]
[--memory-size <value>]
[--vpc-config <value>]
[--environment <value>]
[--runtime <value>]
[--dead-letter-config <value>]
[--kms-key-arn <value>]
[--tracing-config <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Example

update-function-configuration --function-name functionName

<h4>References</h4> <ul> <li><a href="https://aws.amazon.com/documentation/lambda/">AWS Lambda Docs</a></li> <li><a href="https://boto3.readthedocs.io/en/latest/">Boto 3 Docs</a></li> <li><a href="http://docs.aws.amazon.com/cli/latest/reference/lambda/">AWS CLI Docs</a></li> <li><a href="http://docs.sqlalchemy.org">SQLAlchemy Docs</a></li> </ul> For queries or issues, feel free to contact or open an <a href="https://github.com/srcecde/aws-lambda-cheatsheet/issues">issue</a>