, 16 tweets, 5 min read Read on Twitter
Next up: tracing the black box of serverless by Matt Williams #ServerlessDaysBOS
Matt recently adopted - learned what many parents have learned - babies need a lot of feeding. Wanted to start using an app to track how much his daughter is consuming - all existing apps out there suck #ServerlessDaysBOS
(side note: co-worker has titled this section DadOps)
@Technovangelist felt he could build a better baby feeding app #ServerlessDaysBOS
Used a tool called coda, had lambda writing to coda, ability to integrate Alexa #ServerlessDaysBOS
Getting data into coda - provide API token, get document id, get table id, get column I'd, post data that is the amount of formula given #ServerlessDaysBOS
And it just works. No errors. Data shows up where and when it's supposed to. But it's slow - how do you figure out where the problem is when there's no "problem" #ServerlessDaysBOS
Go to the three pillars of observability - metrics, logs, traces. As soon as you create a lambda it shows you basic metics like duration, invocation, etc #ServerlessDaysBOS
Can also write custom metics relevant to the actual app. Can get more granular timing data by just measuring and looking at aggregate - but is that actually useful? #ServerlessDaysBOS
Next you can go to logs. Structured logs are good for understanding and finding what's going on. #ServerlessDaysBOS
Then you get to traces. Shows request based view of what is happening. In lambda you just check a checkbox and you're good to go #ServerlessDaysBOS
Now you can dig in to x-ray and look request by request. Matt found an error in API gateway that was hidden before since he doesn't return the code #ServerlessDaysBOS
But still don't know what's going on. To get more detail - can add decorators to capture more data within the code #ServerlessDaysBOS
Now there's much more detail in x-ray view. Able to see that a lot of his time was spent getting static values. Hard coded those in the function instead and finally improved performance #ServerlessDaysBOS
To get even more you can add annotations and get the ability to narrow down x-ray traces to those annotations #ServerlessDaysBOS
And even in datadog you get all three traces logs and metrics in one view #ServerlessDaysBOS
Missing some Tweet in this thread?
You can try to force a refresh.

Like this thread? Get email updates or save it to PDF!

Subscribe to Ann Guilinger
Profile picture

Get real-time email alerts when new unrolls are available from this author!

This content may be removed anytime!

Twitter may remove this content at anytime, convert it as a PDF, save and print for later use!

Try unrolling a thread yourself!

how to unroll video

1) Follow Thread Reader App on Twitter so you can easily mention us!

2) Go to a Twitter thread (series of Tweets by the same owner) and mention us with a keyword "unroll" @threadreaderapp unroll

You can practice here first or read more on our help page!

Follow Us on Twitter!

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just three indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3.00/month or $30.00/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!