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ClickHouse High Availability & Replication
Fault-Tolerant & High-Performance ClickHouse Architectures
For organizations that rely on real-time analytics, reporting, or high-volume event ingestion, ClickHouse uptime and performance are mission-critical. At Mafiree, we architect ClickHouse High Availability (HA) & Replication solutions that ensure continuous data availability, fast query performance, and linear scalability — across cloud, on-prem, or hybrid infrastructures.
Key Highlights of Our ClickHouse HA & Replication Solutions
Replicated Tables for Automatic Redundancy
Use ReplicatedMergeTree tables to maintain multiple synchronized copies of critical datasets.
- Auto-recovery when nodes rejoin
- No single point of failure in storage
- Ensures consistency using ZooKeeper / ClickHouse Keeper
Perfect for critical analytics pipelines requiring uninterrupted access.
Distributed Tables for Horizontal Scaling
Scale reads and writes across multiple shards and replicas through Distributed tables.
- Distribute workloads across clusters for high throughput
- Support massive datasets and parallel query execution
- Achieve near-linear scalability without re-architecting applications
Ideal for ad-tech, gaming, IoT, and real-time reporting.
Multi-Shard Architectures for Massive Workloads
Sharding enables the cluster to handle billions of events per day.
- Automatically balance load across multiple shards
- Segment data by time, region, or business domain
- Improve ingestion rates and query performance
Enables petabyte-scale analytics environments.
Read & Write Isolation with Replica Roles
Separate heavy analytical jobs from ingestion workloads.
- Analytical queries routed to replica nodes
- Writers push to primary replicas for performance stability
- Guaranteed query responsiveness even during peak loads
Enables predictable performance for BI, dashboards, and ML workloads.
Failover & Self-Healing Clusters
HA ClickHouse clusters automatically detect and recover from failures.
- Replica failover without losing data
- Automatic part synchronization after node recovery
- Rolling upgrades with zero downtime
Critical for organizations requiring 24/7 analytics availability.
Unified Replication & Cluster Monitoring
Central dashboards to monitor:
- Shard health and replica lag
- Insert rates and merge queue delays
- ZooKeeper / Keeper health and synchronization
- Query performance across distributed nodes
Receive proactive alerts before performance degradation impacts users.
Industry Use Cases
E-Commerce & Retail
Use distributed queries and replicas to handle real-time product analytics, customer behavior, and high traffic during sale events.
SaaS & Multi-Tenant Apps
Shard data by tenant or region; isolate analytical workloads to ensure consistent performance across customers.
Fintech & Banking
Real-time fraud detection, transaction analytics, and compliance dashboards powered by replicated tables for reliability.
Healthcare Analytics
Replicated clusters ensure uninterrupted access to dashboards analyzing EMR, device data, and operational metrics.
Media, Ad-Tech & Gaming
Process billions of clickstream or gameplay events with low latency using multi-shard distributed clusters.
FAQs – ClickHouse High Availability & Replication
Get in touch with us
Highlights
More than 6000 Servers Monitored
Happy Clients
Certified DBAs
24 x 7 x 365 Support
Contacts
Nagercoil Office
Miru IT Park, Vallankumaranvillai,
Nagercoil, Tamilnadu - 629 002.
Bangalore Office
Unit 303, Vanguard Rise,
5th Main, Konena Agrahara,
Old Airport Road, Bangalore - 560 017.
Call: +91 6383016411
Email: sales@mafiree.com