## Overview This case study entry represents an unavailable resource from Farfetch's tech blog. The original article, titled "Scaling Recommenders Systems with Vespa," has been deleted by its author and returns a 410 Gone HTTP error. Farfetch is a well-known luxury fashion e-commerce platform that connects consumers with boutiques and brands worldwide, making recommendation systems a critical component of their technology stack. ## What We Can Infer Based solely on the URL and the partial title that remains visible, this article appeared to discuss how Farfetch leveraged Vespa, an open-source big data serving engine developed by Yahoo (now Verizon Media), to scale their recommendation systems. Vespa is commonly used for applications requiring real-time computation over large datasets, including search, recommendation, and personalization use cases. In the e-commerce domain, recommendation systems are essential for improving customer engagement, increasing conversion rates, and enhancing the overall shopping experience. For a luxury fashion platform like Farfetch, which deals with a vast catalog of products from multiple boutiques and brands, having a scalable and efficient recommendation infrastructure would be particularly important. ## Limitations of This Entry It is crucial to note that this case study entry is severely limited due to the unavailability of the original content. The following aspects cannot be determined or verified: - The specific technical architecture or implementation details of how Vespa was integrated into Farfetch's recommendation pipeline - The scale of the system in terms of queries per second, catalog size, or user base - Any performance benchmarks, latency improvements, or business metrics achieved - The specific recommendation algorithms or machine learning models used in conjunction with Vespa - Whether this system involved any LLM or embedding-based approaches for semantic recommendations - The challenges faced during implementation and how they were overcome - The team structure or timeline for the project ## Context on Vespa for Recommendations While we cannot speak to Farfetch's specific implementation, Vespa is a popular choice for scaling recommendation systems because it provides: - Real-time indexing and serving capabilities - Support for vector similarity search, which is essential for embedding-based recommendations - The ability to combine structured queries with machine learning models - Horizontal scalability for handling large catalogs and high query volumes - Built-in support for ranking and personalization Many e-commerce companies have adopted Vespa or similar technologies (like Elasticsearch with vector search capabilities, or purpose-built vector databases) to power their recommendation infrastructure, especially as the industry has moved toward embedding-based and semantic recommendation approaches. ## Relevance to LLMOps Without the original content, it is difficult to assess whether this case study had direct relevance to LLMOps. However, modern recommendation systems increasingly incorporate embedding-based approaches that may leverage language models for: - Generating product embeddings from descriptions and metadata - Understanding user intent through natural language queries - Creating semantic representations for content-based filtering - Enabling conversational commerce and natural language product discovery If Farfetch's implementation involved any of these capabilities, it would have been relevant to the broader LLMOps domain. Vespa's support for vector similarity search makes it a viable platform for serving recommendations based on embeddings generated by language models. ## Conclusion This entry serves primarily as a placeholder and acknowledgment that valuable technical content from Farfetch's engineering team on scaling recommendation systems existed but is no longer publicly available. For practitioners interested in this topic, alternative resources on Vespa for recommendations or Farfetch's other published engineering content may provide relevant insights. The deletion of this content is unfortunate as case studies from major e-commerce platforms provide valuable learning opportunities for the broader engineering community. Given the lack of substantive content, readers should seek out other published materials on recommendation system architecture, Vespa implementation guides, or Farfetch's remaining technical blog posts for practical guidance on scaling recommendation systems in e-commerce environments.