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HelloTech

Sep 19, 2023 · Databases

Deep Dive into Elasticsearch RestClient Sniffer and Node Discovery Mechanism

The article explains how our driver‑passenger matching service migrated from load‑balanced Elasticsearch access to a direct RestClient, then automated node discovery using the built‑in Sniffer and SniffOnFailureListener, detailing its scheduling, request logic, and how this eliminates manual IP management while keeping the client in sync with cluster topology.

ElasticsearchJavaNode Discovery

0 likes · 11 min read

Deep Dive into Elasticsearch RestClient Sniffer and Node Discovery Mechanism

Qunar Tech Salon

Oct 19, 2021 · Databases

Design and Implementation of a MySQL Traffic Sniffer for Full‑stack Access Logging

This article describes the background, functional requirements, architecture, packet‑capture implementation using libpcap, MySQL protocol parsing, result processing, and storage strategy (Kafka + ClickHouse) of a custom MySQL sniffer developed at Qunar to provide complete database access logs for auditing, performance analysis, and operations.

ClickHouseKafkaMySQL

0 likes · 16 min read

Design and Implementation of a MySQL Traffic Sniffer for Full‑stack Access Logging

360 Zhihui Cloud Developer

Feb 28, 2017 · Databases

How to Use MySQL Sniffer for Real-Time MySQL Traffic Capture

MySQL Sniffer is a command‑line tool that captures MySQL protocol traffic in real time, displaying timestamps, users, source IPs, databases, query latency, row counts and SQL statements, while offering flexible options such as multi‑port capture, daemon mode, log splitting and output to files.

Command LineDatabase MonitoringMySQL

0 likes · 8 min read

How to Use MySQL Sniffer for Real-Time MySQL Traffic Capture