June 10 2021 10:15 am June 10 2021 10:45 am America/Los_Angeles The Unreasonable Effectiveness of a Single Wide Event Distributed tracing has seemingly become the biggest hook for adoption of observability tools. Trace waterfall renderings provide viscerally visual insight into the inner workings of our applications... Virtual Meet
TRACK 2: Mysteries Solved
Thursday, June 10 2021 10:15 am - 10:45 am PT

The Unreasonable Effectiveness of a Single Wide Event

Distributed tracing has seemingly become the biggest hook for adoption of observability tools. Trace waterfall renderings provide viscerally visual insight into the inner workings of our applications. However, they're relatively expensive to ingest, process and store—especially at scale. Managing the sheer volume of spans generated at scale can lead us to discovering complex dynamic sampling techniques; which can really mess with our mental models.

Another strategy exists: the single wide event. Using only a single event for each valuable business transaction, and packing it with fields, we can reduce event volume at scale so you don't have to sample them. In this talk, I'll cover how my team made use of this technique at CircleCI to great effect, with real examples of questions this approach has allowed us to answer.