Serverless tips & deployment best practices

#todayilearned #serverless

TL;DR notes from articles I read today.

When going serverless, focus on limiting the scope of your functions.
Communication between your functions is important to exchange data within your app. You can either directly call another Lambda function from within a Lambda function or upload data to a service and let this service trigger another Lambda function.
Protect your code from malfunctioning by setting up a queue, or buffer requests if necessary for uniform scalability when working with numerous services.
Your functions have 15 minutes to run before they time out. So, the execution time for your app should be under that timeframe.
The more memory you allocate, the more CPU power you have. The same is true for network and I/O throughput.

Full post here, 5 mins read

Keep your secret out of your source control and limit access to them. Use separate secrets for different application stages when appropriate.
When you create IAM policies for your services, limit the roles to the minimum permissions required to operate.
Restrict deploy times by locking down your deployments during periods you don’t want to be disturbed.
Use a single region or a subset of regions that suit your needs to offset inconsistencies with a geographically distributed team.
Create consistent service names for your Lambda functions. It will help you to find relevant functions easily and to tie multiple functions with a particular service faster.

Full post here, 6 mins read

With serverless, you pay for what you use - the hidden infrastructural support for scaling is also built into the final bills.
Scaling is handled for you. You don’t have to worry whether a function is run once a day or a million times a day.
Startups often need to change system concept and functionality mid-way and the agility serverless structure offers is perfect for this use case.
It allows startups to dedicate all the engineers to solve business problems and not spend time on server management & infrastructure.
Serverless gives startups a chance to deliver quickly, and use speed and agility to their advantage.

Full post here, 7 mins read

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