Apply Cache For Beginner #1

charsyam@naver.com

Key and Value

KEY

User_ID

Value Profile - LastLoginTime - UserName - ETC

Key and Value 1. Check Cache Server -> Read Cache

2. Read DB -> Write Cache

Key and Value – Easy to Read

1. Check Cache Server -> Read Cache

2. Read DB -> Write Cache

Key and Value – Hard to Update

1. Update To DB

2. Update to Cache

What is Hard?

Key and Value – SYNC Easy

1. Update To DB

2. Fail To Transaction

Fail!!!

Key and Value – SYNC HARD

1. Update To DB

2. Update to Cache Fail!!!

Key and Value – How

1. Update To DB

2. Update to Cache Fail!!!

RETRY BATCH

Data! The most important thing

If data is not important

Cache Updating is not important

Login Count

Last Login Time

ETC

BUT!

If data is important

Cache Updating is important

Server Address

Data Path

ETC

HOW!

RETRY! Retry, Retry, Retry Solve Over 9x%.

Batch! Queuing Service

Error Log Queue

Error Log

Error Log

Error Log

Error Log

Batch Processor

Cache Server

Error Log Queue

Error Log

Error Log

Error Log

Error Log

Batch Processor

Cache Server

Error Log Queue

Error Log

Error Log

Error Log

Error Log

Batch Processor

Cache Server

UPDATE

GEARMAN BEANSTALKD

Thank you!