@inproceedings{raptors2026-c021,
  title     = {{Building eCommerce Systems That Survive Their Own Success}},
  author    = {Agrawal, Gaurav},
  booktitle = {Proceedings of the Raptors Conference},
  volume    = {1},
  year      = {2026},
  publisher = {Hackathon Raptors},
  address   = {London, United Kingdom},
  doi       = {10.68495/rc.2026.C021},
  url       = {https://doi.org/10.68495/rc.2026.C021},
  abstract  = {Modern eCommerce platforms must absorb heavy traffic, frequent updates and strict latency expectations while staying dependable around the clock. This paper presents the engineering patterns behind large-scale, low-latency eCommerce systems. It starts with how the three domains of user interaction (pre-transaction, transaction and post-transaction) place different demands on volume, availability, latency and consistency. It then shows how scaling out stateless services over partitioned, replicated datastores removes shared bottlenecks. From there it covers read-optimized design with precomputed, response-ready documents, and read-through caching and invalidation. It examines the consistency and freshness trade-offs of asynchronous multi-region replication, and the ingestion strategy that keeps data consistent. It then covers non-blocking programming and memory and network efficiency, and resiliency practices such as circuit breakers, adaptive rate-limiting, region failovers, auto-scaling and graceful degradation. It closes with the anti-patterns that quietly erode scalability. The paper provides a mental model for building highly scalable and available distributed systems, built on one principle: architecture makes scale possible, but operational discipline and resiliencies makes it survive.}
}