API Performance
Happy New Year! We took a week off last week for the Christmas & New Year holiday, but now we are back at the grindstone. For our API ratings, we look at over 100 APIs and pull all the metrics together to give you a general feeling for the service quality for an organization’s APIs in a particular API ratings category with our patented CASC score.
Something of interest
Social Networks is a pretty competitive API ratings category with everyone in the Green Zone this week and even the bottom API, LinkedIn, having a perfectly respectable CASC score of 8.58. 
The fastest API is Google with a blistering median latency of 56 ms. Etsy is the slowest with a median latency of 842 ms. 
Unsurprisingly, Google has very good DNS Lookup Time performance from all clouds and regions. This is, also unsurprisingly, in contrast to Etsy. 
Because of the way that DNS works, DNS Lookup Time is typically always about 4 ms from all locations and clouds. This is the case for Google, but very much not the case for Etsy. Only in AWS Europe, North America and Oceania do we see a DNS Lookup Time we would hope to see. The fact that the AWS DNS Lookup Time is 12 ms across a variety of regions suggests that it should be possible to obtain a quicker time across the other regions and clouds. Looking into the network configuration for Etsy for all clouds and regions should enable an increase in performance for DNS and would be an easy win for improving median latency and API ratings CASC score.
API Ratings: Overall Quality
Week Ending 4 January 2021
Category
Organization
CASC score
Corporate Infrastructure
GitHub
9.60
COVID-19
WHO