The document describes the BEAR framework architecture, which follows RESTful MVC principles. It has 3 main components: Page (Controller), Resource (Model), and View. The Resource manages data access from databases, files, XML etc. and is accessed by the Page. The Page acts as a controller and returns a View for the client. The framework supports building RESTful APIs and caching of Resources and Pages to improve performance. It aims to provide a uniform interface, client-side caching, and stateless servers.

1. BEAR framework architecture
RESTful MVC

2. 3 components
• Page (Controller)
• Resource (Model)
• View

3. Resource (Model)
Page (Controller) DB File XML Page
View
Client Resource
RO
read User?id=5
Private CRUD Resource Access
Code
Header Page
Body
View GET /user?id=5 RO
Public HTTP Access
HTML Bot
PC JS Socket CLI REST
JSON Mobile
Game
iPhone
XML

4. Internal API on ROA
API

5. DB File XML Page
Resource Object
onCreate onRead onUpdate onDelete
read User?id=5 Ro
Internal Access with Internal API
+Option -int Code mini web
read User/Profile?user_id=5
read User/Friend?user_id=5 cache -array Headers
resource template -array Body
update Footprint/?user_id=5
pager
post once exactly
Page Controller ROA
GET /user?id=5
External Access
Bot
View
JS

6. • Page Resource
• Resource
body Headers
code
HTTP
• or
CRUD +URI
• PHP

7. Resource Portability

8. DB File XML Page
Resource
read User?id=5
Ro
ROA -int Code API
-array Headers
-array Body
CLI / HTTP / Socket Interface
Shell Socket REST Java / Perl / Ruby / Python

9. • View Page
•
• web
• comet orbited

10. REST

11. Client - Server (CS)
Resource
Server
•
Client
Page

12. Client - Stateless - Server (CSS)
Resource
read User?id=5 • 1
•
set id=5; •
get User; •
Page

13. Client - Cache - Stateless - Server (C$SS)
Resource
•
Resource Cache
Page

14. Uniform - Client - Cache - Stateless - Server (UC$SS)
Resource
onCreate onRead onUpdate onDelete
read User?id=5
•
getUserName(5)
Resource Cache
Page

15. Uniform - Layered - Client - Cache - Stateless - Server (ULC$SS)
Profile Follower
•
Cache Cache
User
•
•
•
Cache
Page

16. Caches

17. DB File XML Page
Resource Object
Resource Cache
read User?id=5 Ro
with resource template
-int Code
read User/Profile?user_id=5
read User/Friend?user_id=5
‘template’ -array Headers
update Footprint/?user_id=5 =>user.tpl -string Body
Cached resource HTML
Init Cache
Page Controller
Page Cache GET /user?id=5
External Access
Bot
JS

18. •
•
• MVC html
view