Work Tembo (acquired by Hoonuit)
One API over five incompatible data sources
RethinkDB, Postgres, SQL Server, Salesforce and third-party APIs, all feeding the school report card frontends.
- Client
- Tembo (acquired by Hoonuit)
- Role
- Backend Developer
- Period
- 2018 to 2019
- Focus
- Development, APIs
- 5 backend data sources unified
- 2 frontend tools served
- Selenium multiprocess visual regression checks
I worked on the API layer powering Tembo’s school report card frontends. Behind
it sat RethinkDB, Postgres, SQL Server, external APIs and Salesforce, reached
through simple-salesforce. The frontends did not need to know any of that.
I connected the API to the Finder and Explorer tools and added features as those products needed them.
Debugging across a reverse proxy
A fair amount of the work was diagnosing failures in the application layer that only appeared because of our nginx reverse proxy microservice architecture. Those bugs do not reproduce locally and they do not respect service boundaries.
To get faster feedback, I wrote a multiprocess Selenium script that drove the web application and surfaced errors visually, so regressions showed up as pictures rather than as a support ticket a week later.
Screens
