4. We are the UK’s
#1 classifieds website
and in the UK
with over
top 30 websites
7 million
visitors a month*
* Average unique visitors according to ComScore data in 2013
5. A place which connects people
to the things they need…
6. • 1.7 million live adverts
• 150 million adverts posted in all time
• 100,000 new adverts per day
• Approx 300,000 replies per day
Source: Gumtree data, November 2013
30. So where are Gumtree in all this?
• Keeping a close eye on eBay
Kleinanzeigen‟s experiences
• Acknowledging that staying with the
MySQL and Cassandra solution, is not
suitable for Gumtree‟s long term needs
37. Redis – all good?
• Single master = single point of failure
• Sentinel – potential 66 seconds of
downtime when master fails?
• Sharding is never easy
• Not tested dual data centre setup
40. • Popular Search Tracking
– High realtime write-traffic
– Regretting this a lot
• Some low traffic use cases
– Low traffic, low read
• Some batch event analysis
– Batched reads and writes
41. In Conclusion
• Data consistency vs. High availability
• NoSQL comes in many different guises,
technologies suited for different use cases
• No technology is perfect
42. If you enjoyed this talk
and like Gumtree
• eBay Tech Meetups across Europe
– http://www.meetup.com/eBay-Europe-Technology
• Gumtree Careers via LinkedIn
– http://linkd.in/1eu4rK5