Jan 21, 2026 · Operations

How Tail‑Based Sampling Boosts Distributed Tracing Accuracy While Cutting Costs

This article explains the challenges of accurate RED metric collection in high‑traffic microservices, compares head‑based and tail‑based sampling, and details Volcano Engine APMPlus's multi‑level, hash‑routed tail sampling design, performance optimizations, and real‑world evaluation results.

APMKubernetesObservability

0 likes · 13 min read

How Tail‑Based Sampling Boosts Distributed Tracing Accuracy While Cutting Costs

dbaplus Community

Oct 19, 2022 · Backend Development

How Trace2.0 Cuts Tracing Costs by 66% with Tail Sampling and ClickHouse

This article details the design of Trace2.0, a next‑generation distributed tracing platform built on OpenTelemetry, covering its end‑to‑end architecture, tail sampling with hot‑cold storage, Bloom‑filter implementation, and a self‑built ClickHouse storage layer that reduces storage costs by two‑thirds while improving query performance.

Backend ArchitectureClickHouseOpenTelemetry

0 likes · 14 min read

How Trace2.0 Cuts Tracing Costs by 66% with Tail Sampling and ClickHouse