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Aikesheng Open Source Community
Aikesheng Open Source Community
Dec 10, 2024 · Databases

Random Data Source Selection Issue When Adding Replicas in OceanBase 4.2.1.4 and Its Solutions

An OceanBase 4.2.1.4 deployment experienced random selection of data sources when adding tenant replicas, causing cross‑city bandwidth congestion; the article reproduces the issue, analyzes its cause, and presents three remediation methods—including setting the choose_migration_source_policy parameter, manual replica addition, and temporary network isolation.

DataMigrationDatabaseConfigurationDisasterRecovery
0 likes · 9 min read
Random Data Source Selection Issue When Adding Replicas in OceanBase 4.2.1.4 and Its Solutions
Top Architect
Top Architect
Dec 12, 2021 · Databases

Elasticsearch Cluster and Data Layer Architecture Overview

This article explains Elasticsearch’s cluster and data layer architecture, covering nodes, indices, shards, replicas, mixed and tiered deployment models, storage options, and the trade‑offs of different distributed system designs for scalable systems.

Cluster ArchitectureElasticsearchreplica
0 likes · 14 min read
Elasticsearch Cluster and Data Layer Architecture Overview
Java High-Performance Architecture
Java High-Performance Architecture
Nov 12, 2021 · Databases

Elasticsearch Cluster Architecture: Nodes, Shards, and Deployment Options

This article explains the core concepts of Elasticsearch’s distributed architecture—including nodes, indices, shards, replicas—and compares mixed and tiered deployment models, while also discussing data storage strategies, replica benefits, and the trade‑offs of local‑file versus shared‑storage distributed systems.

Distributed SystemsElasticsearchreplica
0 likes · 15 min read
Elasticsearch Cluster Architecture: Nodes, Shards, and Deployment Options
Top Architect
Top Architect
Sep 21, 2021 · Databases

Elasticsearch Cluster Architecture and Deployment Strategies

This article explains Elasticsearch's core concepts—nodes, indices, shards, and replicas—describes the indexing flow, compares mixed and layered deployment models, and discusses data‑layer architectures, helping readers choose the appropriate cluster design for reliability and scalability.

Cluster DeploymentElasticsearchShard
0 likes · 13 min read
Elasticsearch Cluster Architecture and Deployment Strategies
Tencent Cloud Developer
Tencent Cloud Developer
Nov 19, 2020 · Backend Development

Kafka Message Queue Reliability Design and Implementation

The article thoroughly explains Kafka’s message‑queue reliability design and implementation, covering use‑case scenarios, core concepts, storage format, producer acknowledgment settings, broker replication mechanisms (ISR, HW, LEO), consumer delivery semantics, the epoch solution for synchronization, and practical configuration guidelines for various consistency and availability requirements.

BrokerConsistencyConsumer
0 likes · 15 min read
Kafka Message Queue Reliability Design and Implementation
Architecture Digest
Architecture Digest
Oct 1, 2020 · Big Data

Elasticsearch Overview: Architecture, Core Concepts, and Performance Optimization

This article provides a comprehensive introduction to Elasticsearch, covering data types, the role of Lucene, cluster architecture, node roles, discovery mechanisms, shard and replica management, mapping, installation, health monitoring, indexing workflow, storage internals, refresh and translog processes, segment merging, and practical performance and JVM tuning tips.

ElasticsearchPerformance OptimizationShard
0 likes · 35 min read
Elasticsearch Overview: Architecture, Core Concepts, and Performance Optimization