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Evan Chan

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Lessons Learned: Porting a Streaming Data Pipeline from Scala to Rust.Scale By the Bay 20232023-11-13
Conviva ports a mission‑critical streaming pipeline (handling ~5 trillion events/day) from Scala/Akka to Rust and reports concrete wins: a prototype using…
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Location Based Data Engineering for Good with PySpark:GraphsScale By the Bay 20212021-10-28
Pipeline shows how PySpark plus Kedro reads cloud-stored pings, sessionizes by device, coalesces adjacent points with window functions, and infers trips using…
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Allocating Less: Really Thin Rust Cloud AppsCloud Native Rust Day EU 20212021-05-03
Shows concrete memory wins and tools: heap-profiles with dhat, JSON comparisons that cut peak heap by ~30% using json-rust, and a repo with benchmarks…
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Allocating Less: Really Thin Rust Cloud AppsRustLab 20212021-03-18
Argues that lowering allocations is key for tiny cloud units and gives concrete tactics: measure with Dhat to find hotspots (example: Serde JSON value…
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Allocating Less: Really Thin Rust Cloud AppsRustLab 20212021-03-18
Rust can cut allocations to make tiny cloud units: a Vec is three 8-byte fields (24 bytes), a slice is 16 bytes, and a HashMap entry can cost up to ~72 bytes…
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Panel: Programming Languages in the Era of the CloudScale By the Bay 20202020-11-12
Panel argues cloud choices hinge on concrete tradeoffs: Go wins for fast startup and tiny static binaries and cross-compilation; Rust wins for memory control…
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Rust and Scala, Sitting in a Tree….Scale By The Bay 20192019-11-13
A Scala in-memory time-series DB stores 100 billion data points and ingests 1M samples/sec but hits ~20s GC pauses; moving off-heap was painful. Rust’s…
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FiloDB: Real-time, In-Memory Time Series at Massive SMACK ScaleScale By The Bay 20182018-11-15
FiloDB is an open-source, in-memory time-series database built on Scala, Akka, Kafka, Cassandra and Mesos that targets high-cardinality monitoring and…
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Building a High-Performance Database with Scala, Akka, and SparkScale By the Bay 20172017-11-16
FiloDB is a production-ready columnar analytics DB built with Scala, Akka Cluster, Spark and Monix that ingests high-volume streams and serves low-latency…
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Evan Chan InterviewScale By the Bay 20172017-11-16
Built FiloDB and Spark Job Server, and describes a columnar real‑time distributed query engine using Storm, Spark, Kafka, Cassandra and Scala/Akka. Scaling…
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Akka in Production: Our StoryPacific Northwest Scala 20132013-10-27
Company processes 2.5 billion events a day and details a path from early Akka experiments to a simple, reliable pipeline that reads from Kafka, stages with…
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