CouchDB

(replicated data store for distributed proxy server)

@tkramar

Distributed proxy server

● Manipulates● request/response headers/bodies

● Recommend new pages based on browsing patterns

● Insert new search results based on what similar users found relevant

● Your next idea..

We want..

● .. to have multiple proxies● localization services● high availability

CouchDB

● Document database● JSON● _id● _rev

Views

● JavaScript MapReduce● “SELECT”, “JOIN”● B-tree● persistent

Pagination

● Slow● skip, limit● http://127.0.0.1:5984/proxy/_design/access_logs/_vi

ew/by-user-and-timestamp?limit=5&skip=5

● Fast● startdoc, limit● http://127.0.0.1:5984/proxy/_design/access_logs/_vi

ew/by-user-and-timestamp?startkey=3456&skip=5

● http://guide.couchdb.org/index.html