O C T O B E R 1 3 - 1 6 , 2 0 1 6 • A U S T I N , T X

Queue Based Indexing & Collection Management Devansh Dhutia

Platform Architect

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•  National & Local newspaper/media company •  92+ Markets in 33 states

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03Current/Future Architecture

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01Agenda

•  Solr @ Gannett •  Current State •  Collection Management •  Queuing Solution •  Future Work •  Questions

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Site Search CMS Search

Analytics Personalization

40+ Applications 20M+

Integral pillar of Gannett’s Digital Platform

total documents

800,000+ per month

Growing rapidly

100,000+ requests per minute

Highly Available

~100ms average response time

Extremely Fast

8 nodes

256 gb memory per availability zone

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03Current State

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01Current State

•  Synchronous Operations •  Near Realtime •  Time Consuming schema changes •  Visible outage impact

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01Collection Management

•  Create Collection •  Deploy Batch Indexer •  Index new Collection •  Update Alias to new Collection •  Run catch up •  Deploy Search/Index Apps

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01Realtime Changes / Queries

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01Prep Alternate Collection

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01Deploy

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01Outage Problems

•  Spinning Wheel •  Duplicate content •  Unable to find new content •  Frustrated editors •  Ux & other presentation layers

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01Enter Queues

•  Asynchronous Write Operations •  Near Realtime •  Faster schema changes •  Auto scale indexing workers •  Low authoring outage impact •  Eventually consistent

Queue Based Indexing

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01RabbitMQ

•  Clustered & Highly Available •  FIFO •  pub/sub model •  Consistent Hash / Multiple Queues

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01RabbitMQ

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01Components •  Realtime Queue •  Batch Queue •  Prep Queue •  Deadletter Queue •  Indexing Service •  Prep mode •  Batch Push Service

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01Future Work

•  Continuous Delivery of schema •  Build payload in one zone only •  Automated Deadletter handling •  Earlier notification of potential failure

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Thank you Interested in joining our team at Gannett?

http://www.gannett.com/careers

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Questions?