Neil Gulati

Built a compact API to create, cache, and manage the multiple-nested Zerto and ZSSP sessions necessary to retrieve backup and failover information from the Zerto infrastructure API and provide properly authenticated information to customers.

The API managed the numerous failure scenarios possible within the nested sessions using a compact looping algorithm. This ensured that sufficient retries were attempted without wasting network resources with unnecessary requests.

Errors that were expected as part of the handshake, such as 401s on sub-session expiry, were properly masked and refreshed by the algorithm, providing a clean and simple wrapper for the infrastructure management software within a single compact service. The caching of sessions was also used and shared across hosts where possible to minimize response delays and network usage.

A full-stack framework consisting of a JavaScript front end to provide lazy-cached data to the web application and a Perl back end negotiating data updates with the JavaScript cache layer.

The requirements included avoiding database use, so the back end utilized a C layer for fast file-based storage, achieving lower latency than the Oracle alternative. The JavaScript application was also effectively decoupled from the server, enabling access to all data directly from the local file store. Finally, the data exchange used a custom protocol to improve performance and security over JSON.

This framework was used to create multiple web applications globally and regionally for managing corporate real-estate, teams, and other purposes.

Developed a lightweight, innovative algorithm to meet the R2 CAS telephone standard, running on the new low-cost and -spec Mitel Dual E1 telephony board. The C application managed call answering and PCM music on hold for 30 channels within the tight limitations of board capabilities.

I successfully completed a live demonstration of the prototype to confirm standards compliance in Brussels on the Siemens building telephone PABX.