Definition:Database Replication
Database Replication copies data from a primary write node to multiple read-replica follower servers in real time.
Detailed Technical Explanation
Business Perspective
Guarantees continuous 24/7 data availability and prevents database crashes during high user read spikes.
Technical Perspective
Operates via streaming write-ahead log (WAL) replication to maintain sub-second synchronization with read replicas.
Real-World Example
Routing read-only dashboard reporting queries to 3 PostgreSQL read replicas while primary writes go to the master DB.
Common Architectural Mistakes
- ✗Stale Read Lag: Querying read replicas immediately after write operations before streaming WAL replication catches up.
Ecosystem Integration
Engineering Services & Solutions
Technology Hub
Frequently Asked Questions
Primary-Replica vs Multi-Master?
Primary-Replica has one write node and multiple read nodes; Multi-Master accepts writes on all nodes.
Implement This Concept.
Stop reading definitions and start building architecture. Partner with Morgan Dynamics to execute these engineering strategies in your enterprise.
Schedule a Technical ConsultationDeep Dive
Explore technical architectures, cost breakdowns, and enterprise solutions related to this topic.
Related Glossarys
CQRS (Command Query Responsibility Segregation)
CQRS is a pattern that separates read data operations (Queries) from write data operations (Commands) into distinct models.
NewSQL
NewSQL databases combine the relational ACID compliance of SQL with the horizontal multi-region scalability of NoSQL.
Authorization
Authorization is the process of determining whether an authenticated user or system has permission to perform a specific action on a resource.
Encryption
Encryption is the process of encoding plain text information into unreadable ciphertext using mathematical cryptographic keys.
Role-Based Access Control (RBAC)
Role-Based Access Control (RBAC) is an authorization model that assigns permissions to defined Roles rather than individual users.
SQL Injection (SQLi)
SQL Injection is a code injection vulnerability where malicious SQL statements are executed by backend database drivers.