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This article explains the roles of StarRocks FE and BE nodes, details the metadata stored in FE, describes the leader‑follower‑observer architecture, and shows how BDB JE replication, journal logs, and checkpoint mechanisms ensure metadata synchronization and durability even after node failures.
The article explains the purpose, configuration, and core implementation of StarRocks' TabletChecker component, detailing how it periodically scans OlapTable tablets, evaluates their health through multiple checks, and hands unhealthy tablets to the TabletScheduler for repair.
This article explains the evolution from traditional data warehouses and data lakes to the unified Lakehouse architecture, detailing its design, benefits, challenges, and research directions for delivering high‑performance SQL and advanced analytics on open‑format storage.
This article explains Spark SQL’s Catalyst optimizer, describing its extensible design, tree‑based representation, rule‑driven transformations, batch execution to a fixed point, and how Scala’s pattern matching and quasiquotes enable efficient analysis, logical optimization, physical planning, and code generation.
This article explains InfiniFS's cache organization for directory metadata, its optimistic cache usage, and the lazy invalidation mechanism that broadcasts rename updates to a few metadata servers, enabling scalable and efficient metadata services in large‑scale distributed file systems.
This article explains InfiniFS's speculative path resolution, detailing how predictable directory IDs and parallel lookups transform traditional linear RPC-based path traversal into constant‑time operations, dramatically reducing metadata access latency in large, deep directory trees.
This article summarizes the InfiniFS paper, detailing how its access‑content decoupling, speculative path resolution, and optimistic metadata caching enable efficient metadata handling for data‑center‑scale file systems supporting billions of files.
Spine‑Leaf is a two‑layer data‑center network topology that replaces traditional three‑tier designs, reducing latency and hops by connecting every leaf switch to every spine switch, thereby improving redundancy, scalability, and cost efficiency for east‑west traffic.
This comprehensive guide explains the concept of idempotency, why it is essential in distributed and micro‑service architectures, and provides practical patterns, code examples, and best‑practice recommendations for HTTP, databases, messaging, caching, and service‑mesh implementations.
This article explains the purpose of retry mechanisms, why exponential backoff is crucial for handling transient failures, compares common backoff strategies, details key parameters such as base delay, max delay, multiplier and jitter, and provides a Java example that demonstrates their practical effects.
