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VoltDB Technical Overview
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Table of Contents
Overview ................................................................................................................................................. 2
Why Traditional Databases Have Difficulty Scaling ................................................................................ 4
The VoltDB Architecture ......................................................................................................................... 5
1. High-Throughput, Low-Latency SQL Database Operations ............................................................. 6
2. VoltDB Scaling Architecture ............................................................................................................ 8
3. High Availability (HA) ....................................................................................................................... 9
4. Durability ....................................................................................................................................... 10
5. Database Replication ..................................................................................................................... 11
6. Realtime Analytics ......................................................................................................................... 11
7. Provisioning, Management and Monitoring ................................................................................. 12
8. VoltDB Studio for Rapid Application Development ....................................................................... 13
9. Data Integration ............................................................................................................................ 14
10. Developing Applications with VoltDB ............................................................................................ 15
11. Getting Started .............................................................................................................................. 16

VoltDB Technical Overview
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Overview
Created by database pioneer Michael Stonebraker along with senior computer scientists from MIT,
Yale, Brandeis and Brown universities, VoltDB is a blazingly fast relational database management
system (RDBMS) designed to run on modern scale-out computing infrastructures.
VoltDB is aimed at a new generation of high velocity database applications that require:
Database throughput reaching millions of operations per second
On demand scaling
High availability, fault tolerance and database durability
Realtime data analytics
The table below summarizes a few high-velocity application types. Some applications – financial trade
and telco CDR, for example – have been in production for decades. Others reflect markets that are
emerging from technology innovations and Web economies. New or old, these systems must ingest
high velocity data inputs, provide stateful data management, and support a range of realtime analytics
on that data. VoltDB is designed specifically to support these and many other similar applications.
Lower-frequency
operations
High-frequency
operations
Data
Source
Capital markets
Write/index all trades, store
tick data
Show consolidated risk
across traders
Call initiation request Real-time authorization Fraud detection/analysis
Inbound HTTP
requests
Visitor logging, analysis,
alerting
Traffic pattern analytics
Online game
Rank scores:
•Defined intervals
•Player “bests”
Leaderboard lookups
Real-time ad trading
systems
Match form factor,
placement criteria, bid/ask
Report ad performance
from exhaust stream
Mobile device location
sensor
Location updates, QoS,
transactions
Analytics on transactions

VoltDB Technical Overview
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Unlike legacy RDBMS products and NoSQL data stores, VoltDB enables high-velocity applications
without requiring complex and costly sharding layers or compromising transactional data integrity
(ACID) to gain performance and scale:
This white paper is for technical readers. It explains:
The reasons why traditional databases are difficult and expensive to scale
VoltDB’s high throughput scale-out architecture and what makes it different
VoltDB database design considerations and patterns
The paper also provides information to help product evaluators get started with VoltDB.
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