Tagged: tracing

Engineering A bloom filter index for trace_id lookups at 40M spans/day Arjun Mehta · Apr 14, 2026 Tutorials Adding tracing to a legacy monolith without a rewrite Priya Raman · Jan 27, 2026 Tutorials Assembling a request timeline from three signal types by hand Arjun Mehta · May 9, 2026 Engineering Buffering spans in memory: the cost model behind tail-based sampling Arjun Mehta · Jan 27, 2026 Engineering Building the query planner's join order search Priya Raman · May 26, 2026 Engineering Exemplars under the hood: pinning a bucket to a trace ID Arjun Mehta · Mar 3, 2026 Product Exemplars: one click from a metric spike to the trace that caused it Arjun Mehta · Mar 26, 2026 Product From beta to GA: what six months of customers taught us about tail-based sampling Arjun Mehta · May 11, 2026 Engineering Joining spans to logs: the trace_id and time-window algorithm Arjun Mehta · Mar 17, 2026 Tutorials Joining traces and logs in a single HelixQL query Priya Raman · Mar 17, 2026 Product Q1 changelog: sampling, profiling, and a faster query planner Tomás Rivera · Mar 12, 2026 Field notes from the on-call Reading the Timeline Back: How We Rebuilt an Incident From Raw Traces Marco Vidal · Jul 1, 2026 Engineering Sharding traces by trace_id vs by service: a storage tradeoff Arjun Mehta · May 5, 2026 Engineering Span deduplication when OTel collectors retry Arjun Mehta · Jun 2, 2026 Product Tail-based sampling for traces is now generally available Tomás Rivera · Jan 8, 2026 Engineering The cost-based planner: how HelixQL estimates row counts before scanning Priya Raman · Feb 24, 2026 Engineering The exemplar sampler: choosing which points earn a trace link Lena Park · Jun 9, 2026 Field notes from the on-call Tracing a Checkout Failure Through Five Services Before Coffee Marco Vidal · May 28, 2026 Tutorials Turning on tail-based sampling for a single service Tomás Rivera · Mar 29, 2026 Engineering Why HelixQL picks hash join over merge join for trace-log correlation Arjun Mehta · Jan 13, 2026