Eqlog

Eqlog is a term used to describe a family of event-logging tools and protocols focused on structured collection, storage, and equality-based deduplication of telemetry. It emphasizes standardized event schemas, deterministic keys for identifying equivalent records, and integration points for real-time and batch processing in distributed systems.

Typical features include structured event formats (often JSON or similar), configurable equality keys or hashes for deduplication, retention and tiering policies, indexing for fast queries, and streaming-compatible ingestion via agents or brokers. Eqlog implementations commonly provide REST and query APIs, SDKs for multiple languages, and adapters for common sources such as syslog, HTTP, message queues, and cloud event streams.

Architecturally, Eqlog systems are built from lightweight agents, a collection layer that normalizes events, a storage/indexing backend, and a query/analytics interface. Deployments range from single-node self-hosted setups to horizontally scalable cloud services; storage may be optimized for append-only workloads with compaction and tiering to long-term archives.

Use cases include observability and monitoring, security auditing, compliance reporting, incident forensics, and reducing noise through deduplication. The ecosystem often includes visualization tools, alerting integrations, and connectors for security information and event management (SIEM) platforms. Criticisms and trade-offs typically center on operational complexity, storage overhead, and challenges in defining effective equality rules across diverse event sources.