Sep 23–26, 2019
Ashish Aggarwal

Ashish Aggarwal
Principal Engineer, Expedia Group


Ashish Aggarwal is a principal engineer at Expedia Group, leading Haystack—an open source project that’s rapidly being adopted for distributed tracing in fast-growing ecommerce companies like Expedia, HomeAway,, Egencia, SoFi, etc. He’s a full stack software and large-scale data systems engineer with experience in distributed web applications and data analytics platforms leveraging a multitude of languages and technologies. He’s a conference speaker at the Open Source Summit (Linux) and chair speaker and the OpenTracing meetup in Austin 2018.


2:05pm2:45pm Wednesday, September 25, 2019
Location: 1A 06/07
Keshav Peswani (Expedia Group), Ashish Aggarwal (Expedia Group)
Observability is the key in modern architecture to quickly detect and repair problems in microservices. Modern observability platforms have evolved beyond simple application logs and include distributed tracing systems like Zipkin and Haystack. Keshav Peswani and Ashish Aggarwal explore how combining them with real-time, intelligent alerting mechanisms helps in the automated detection of problems. Read more.
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