AWS Lambda vs. Rackspace Fabric

Lambda excels at event-driven, short-lived tasks, such as processing files or building simple APIs. However, it's less ideal for long-running, computationally intensive, or applications that rely on carrying the state between jobs. Cold starts and constant load can easily balloon the costs.

Incentivized

I am highly likely to recommend Rackspace Cloud Monitoring to a colleague. This is assuming they have a decent background in working on cloud servers. If you don't mind digging in yourself to solve problems, then this is a great resource. If you are just learning how to set up servers on your own, then I recommend at least hiring someone to help you use the service. With that being said, Rackspace makes it easy for people you may hire to seamlessly work within your account. They get their own separate developer account.

Incentivized

• No provisioning required - we don't have to pay anything upfront
• Serverless deployment - it gets executed only when request comes and we pay only for the time the request is getting executed
• Integrates well with AWS CloudWatch triggers so it is easy to setup scheduled tasks like cron jobs

Incentivized

• Immediate email notifications: In case a service is down on our servers, we get immediate email notifications via rackspace cloud monitoring service. This helps us to know about the issues and we get in contact with support team to get it resolved.
• Configuration on specific services: We can configure this monitoring on specific services. So for example if i don't want to get notified if MySQL concurrent users limit reached, then I do not need to configure this monitoring for MySQL. I can just use it whenever needed for defined services.
• Group emails and technical contacts emails: The monitoring service can send email alerts to a number of email addresses. Primarily the ones who are added as a technical contact. It helps all people get notified about any issue.
• Auto ticket management: Rackspace automatically creates a support ticket when a service is down and is notified by their monitoring service.

Incentivized

• Developing test cases for Lambda functions can be difficult. For functions that require some sort of input it can be tough to develop the proper payload and event for a test.
• For the uninitiated, deploying functions with Infrastructure as Code tools can be a challenging undertaking.
• Logging the output of a function feels disjointed from running the function in the console. A tighter integration with operational logging would be appreciated, perhaps being able to view function logs from the Lambda console instead of having to navigate over to CloudWatch.
• Sometimes its difficult to determine the correct permissions needed for Lambda execution from other AWS services.

Incentivized

• It would be nice if there were more templates so that beginners could easily create complex monitors
• I seemed to stumble upon the cloud monitoring service after having Rackspace for a while

Incentivized

I give it a seven is usability because it's AWS. Their UI's are always clunkier than the competition and their documentation is rather cumbersome. There's SO MUCH to dig through and it's a gamble if you actually end up finding the corresponding info if it will actually help. Like I said before, going to google with a specific problem is likely a better route because AWS is quite ubiquitous and chances are you're not the first to encounter the problem. That being said, using SAM (Serverless application model) and it's SAM Local environment makes running local instances of your Lambdas in dev environments painless and quite fun. Using Nodejs + Lambda + SAM Local + VS Code debugger = AWESOME.

Incentivized

Amazon consistently provides comprehensive and easy-to-parse documentation of all AWS features and services. Most development team members find what they need with a quick internet search of the AWS documentation available online. If you need advanced support, though, you might need to engage an AWS engineer, and that could be an unexpected (or unwelcome) expense.

Incentivized

AWS Lambda is good for short running functions, and ideally in response to events within AWS. Google App Engine is a more robust environment which can have complex code running for long periods of time, and across more than one instance of hardware. Google App Engine allows for both front-end and back-end infrastructure, while AWS Lambda is only for small back-end functions

Incentivized

I also used Monitis as a monitoring service for our server. Rackspace'S monitoring sends immediate notifications while Monitis might take a couple minutes to understand if a service is down. Since Rackspace has their monitoring integrated with their support system, it helps us a lot and we don't need to call support all the time.

Incentivized

• Positive - Only paying for when code is run, unlike virtual machines where you pay always regardless of processing power usage.
• Positive - Scalability and accommodating larger amounts of demand is much cheaper. Instead of scaling up virtual machines and increasing the prices you pay for that, you are just increasing the number of times your lambda function is run.
• Negative - Debugging/troubleshooting, and developing for lambda functions take a bit more time to get used to, and migrating code from virtual machines and normal processes to Lambda functions can take a bit of time.

Incentivized

• I have overpaid in the past for services I didn't need
• The steepish learning curve might slow things down at first
• I have learned a lot using Rackspace Cloud Monitoring!

Incentivized