MongoDB

Jer-Shuan Lin

Outline

• MongoDB Introduction

• MongoDB vs MySQL

• Conclusion

MongoDB Introduction

• MongoDB(Mongo is from "humongous") • NoSQL database • Writed in C++• MongoDB’s characteristics• No schema • Document-Oriented (Bson type)

• Support• Replica• Sharding• Index

MongoDB vs MySQL

• Comparison in term

MySQL MongoDB

MongoDB vs MySQL(2)

• Comparison in sql MongoDB

MySQL

MongoDB vs MySQL(3)

• Comparison in transaction

MySQL-ACID MongoDB-BASEAtomic Basic Availability Consistent Soft-stateIsolated Eventual consistencyDurable

Conclusion

• Advantage• Cost-down• Better performance for I/O• Support horizontal scaling

• Disadvantage• Not support all sql(ex:join)• Not support transactions based on ACID