CCB12 App Development with Documents, their Schemas and Relationships
CCB12 Couchbase at The Hut Group
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COUCHBASE AT THE HUT GROUP Chris Woods – Architect @ The Hut Group
Transcript of CCB12 Couchbase at The Hut Group
COUCHBASE AT THE HUT GROUP
Chris Woods – Architect @ The Hut Group
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About
About Me
Name: Chris Woods
Role: Architect
Contact: [email protected]
@chriswoods1983
About The Hut Group
The Hut Group is the UK’s leading multi-website online retailer with operations
in the women's fashion, health & beauty, entertainment and gifts market. The
group has also firmly established itself in multiple international markets, with
35% of current sales coming from outside the UK.
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Background
• Server bound: Whenever we deployed our existing application, all
the customers currently on the site get kicked out of the ”checkout
flow”, making it costly to release and consequently restricts when
and how often you can release. • Not resilient: If the server you are bound to via sticky session goes
down customer gets kicked out of checkout. • Costly to scale: very difficult to scale out across data centres.
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Background
Ecommerce Platform
SQL Server
Payment Processing
ServiceDelivery Options
Service
Backend
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The Future
Requirements
• Be capable of supporting 4,000 concurrent sessions per min at a sustained rate during “peak”.
• Should be able to release the system at any time of day and not affect the user experience.
• Grows with the company - can be expanded to support 1,000 to 10,000 times more traffic.
• Can be scaled across multiple data centres in multiple physical locations.
• In case of failover should not cause downtime.
• Improve customer dropout rates (single page).
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The Contenders
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The Contenders
Low Latency Scalable Data Query-able
SQL Server No Hard Hard Yes
Couchbase 1.8 Yes Yes Yes No
Couchbase 2 Yes Yes Yes Yes
Extendable Support
SQL Server Hard Yes
Couchbase 1.8 Yes Yes
Couchbase 2 Yes Yes
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Couchbase 1.8 Migrate Couchbase 2.0
Features Added •Queryable
• to input in data warehouse• Inter-data centre Replication
• to support service continuality
Zero downtime migration options
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New
Checkout Web Platform
Web App Web API
Couchbase Server
Ecommerce platform
Sql Server
Payment Processing Service
Delivery Options Service
Account ServiceOrder Service
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Key Considerations
• Performance.• Availability.• Data storage (serializing and de-serializing).• Segmenting data into buckets.• Code Implementation• Data consistency in an asynchronous, event-driven
environment.• Changing document schema;
• Versioning the document that is stored.
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Checkout Web Platform
WebApp
WebAPI
Queue AdaptorDeliveryService
CouchbaseServer
1. 2.
3.
4.
5.
Queue Adaptor
ChannelService
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CAS
Q) How do we keep the checkout session object (which is a serialized JSON document) consistent?
• CAS• Divide and conquer ...• …And if that fails, compare
Note: this is in Couchbase 1.8
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Document Storage
Checkout Session:id:123
PaymentDetailsId:123
DeliveryOptionsid:123
Shipping RestrictionsId:123
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Success
• Released on 2nd July and has taken over 400,000 orders
• Very few CAS violations, which are gracefully handled when they
do occur.
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What next for Couchbase at The Hut Group
• Local server cache replacement• Tomcat session • Product cache• Special Offer Cache
• Big Data – Speed Layer!
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Questions
?
