JK
JustKalm

Database Architecture

Scalable, resilient data infrastructure

JustKalm's database architecture is designed for high availability, horizontal scalability, and sub-millisecond query performance with intelligent connection management.

Database Metrics

Production performance at scale

2.3TB
Total Data
47K
QPS Peak
0.8ms
P50 Latency
99.99%
Uptime

Database Stack

Primary Store

  • PostgreSQL 16 (primary)
  • Citus for sharding
  • pgvector for embeddings
  • TimescaleDB for metrics

Caching Layer

  • Redis Cluster (6 nodes)
  • Query result cache
  • Session storage
  • Rate limiting counters

Analytics Store

  • ClickHouse cluster
  • Real-time analytics
  • Columnar storage
  • 100B+ rows

Database Topology

Multi-region deployment

┌─────────────────────────────────────────────────────────────────┐
│                        Load Balancer                            │
│                    (PgBouncer + HAProxy)                       │
└─────────────────────────────────────────────────────────────────┘
                              │
         ┌────────────────────┼────────────────────┐
         │                    │                    │
         ▼                    ▼                    ▼
┌─────────────────┐  ┌─────────────────┐  ┌─────────────────┐
│   Primary DC    │  │   Replica DC    │  │   Replica DC    │
│   (us-east-1)   │  │   (eu-west-1)   │  │ (ap-northeast-1)│
├─────────────────┤  ├─────────────────┤  ├─────────────────┤
│ ┌─────────────┐ │  │ ┌─────────────┐ │  │ ┌─────────────┐ │
│ │   Primary   │ │  │ │   Replica   │ │  │ │   Replica   │ │
│ │    (RW)     │ │──│▶│    (RO)     │ │──│▶│    (RO)     │ │
│ └─────────────┘ │  │ └─────────────┘ │  │ └─────────────┘ │
│ ┌─────────────┐ │  │ ┌─────────────┐ │  │ ┌─────────────┐ │
│ │  Standby    │ │  │ │   Standby   │ │  │ │   Standby   │ │
│ │   (Sync)    │ │  │ │   (Async)   │ │  │ │   (Async)   │ │
│ └─────────────┘ │  │ └─────────────┘ │  │ └─────────────┘ │
└─────────────────┘  └─────────────────┘  └─────────────────┘

Database infrastructure designed for 10x growth with sub-millisecond query latency