Sean Jain Ellis

RocksDB ended up promoted as the primary storage engine for Manhattan, Twitter's internally developed key-value database, displacing SSTable and MhBtree. I contributed Python code better to monitor data and CPU usage across multiple canaries. In addition, I supplied Go programming to swap storage engines across more than 50,000 systems safely.

A SaaS platform for school districts and education service centers, OnDataSuite serves as a single source of truth for data from diverse systems, including student management and financial reporting systems. As a founding developer, I contributed to the design and early versions, written in a combination of C, Perl, and PHP, backed with PostNuke and PostgreSQL.

A Go, Python, and TCL system that modified load balancer configurations based on service deployments, for tests, canaries, and production promotions. A Go Docker deployment on a small group of administrative Linux hosts would listen for deployments, then inform Python scripts to update TCL on F5 Networks BIG-IP application delivery controllers. The Go program would verify the updates by making HTTP calls through the system with magic-string headers and reading logs, then updating the Platform Engineering group on success or failure.

I served as the directly responsible individual on the entire ecosystem, creating a unidirectional proxy infrastructure. This replaced several stages of Apache and Oracle Service Bus proxies, with load balancer virtual services between clients and servers. My design replaced a dated version of Squid with Apache Traffic Server to guarantee HTTP/1.1 processing with downstream systems. The caching layer accessed a single load balancer virtual service per render farm. The TCL programming on that virtual service manipulated HTTP requests and forwarded them to healthy service endpoints. This resulted in approximately $26 million in savings for the first animated film to use the system.