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How I Built a Serverless App in Rust(hackernews.com)

98 points by goat_cheese 1 year ago | flag | hide | 34 comments

  • coder_bee 1 year ago | next

    Did you use any specific framework or library for serverless functionality in Rust?

    • john_doe 1 year ago | next

      I leveraged the `actix-web` framework along with some AWS Lambda custom configuration to make it work.

      • john_doe 1 year ago | next

        The codebase is currently around 5K lines of Rust code and I'm using GitHub Actions for continuous deployment.

        • coder_bee 1 year ago | next

          It's impressive how small the codebase is. It seems using Rust and serverless architectures can lead to cleaner solutions.

          • coder_bee 1 year ago | next

            I couldn't agree more! Can't wait for the benchmarks data.

            • systems_0wl 1 year ago | next

              How scaling works in serverless architectures running Rust? Do you use any specific tools?

              • john_doe 1 year ago | next

                Scaling is handled by AWS Lambda based on incoming HTTP requests and serverless computing principles.

  • john_doe 1 year ago | prev | next

    Great article! I've been experimenting with serverless architectures and this post has given me some new ideas.

    • jane_dev 1 year ago | next

      The performance benefits of Rust definitely make it an attractive choice for serverless applications.

      • john_doe 1 year ago | next

        Yes, I plan to publish some benchmark data soon.

        • coder_bee 1 year ago | next

          That's so cool! I'll definitely keep an eye out for that.

          • coder_bee 1 year ago | next

            Which cloud provider did you choose for deploying the serverless app?

            • binary_penguin 1 year ago | next

              Thanks for sharing the memory and timeout values. It will help me with my setup.

              • binary_penguin 1 year ago | next

                Thanks for sharing. Looking forward to reading it.

                • cyber_squirrel 1 year ago | next

                  Are there specific performance optimizations you took advantage of in the Rust code?

                  • john_doe 1 year ago | next

                    Rust's ownership model and zero-cost abstractions give us great performance without additional effort.

  • nerd_rocker 1 year ago | prev | next

    Really interesting to see Rust being used in a serverless context. Are there any specific challenges you encountered?

    • john_doe 1 year ago | next

      There were definitely some challenges related to cold start times, but overall I'm very happy with the outcome.

      • binary_penguin 1 year ago | next

        Excited to see the benchmarks data. I think a lot of developers will find it useful.

        • binary_penguin 1 year ago | next

          How big is the cumulative codebase and what's your deployment process like?

          • john_doe 1 year ago | next

            I'm deploying to AWS Lambda with an initial max memory of 256 MB and 10 seconds timeout.

            • john_doe 1 year ago | next

              I'm also working on a blog post about the cost-benefit analysis of this setup. Stay tuned!

              • code_dude 1 year ago | next

                Any performance hiccups or bottlenecks in your solution and how did you overcome them?

                • john_doe 1 year ago | next

                  One bottleneck I encountered was in networking, which I mitigated through asynchronous I/O with `tokio`.

  • binary_penguin 1 year ago | prev | next

    Do you have any comparison data with serverless setups in other languages?

    • nerd_rocker 1 year ago | next

      No direct comparison, but Rust's performance in general is a major selling point.

      • nerd_rocker 1 year ago | next

        That's great to hear. I hope more Rust developers consider this architecture in the future.

        • nerd_rocker 1 year ago | next

          That's awesome! I'm considering using Rust more for my serverless apps now.

          • nerd_rocker 1 year ago | next

            For sure! And the performance benefits are significant too.

            • nerd_rocker 1 year ago | next

              Exciting times ahead! Thanks again for your insightful article.

              • blue_unicorn 1 year ago | next

                What would you say are the major advantages of using serverless architectures with Rust?

                • john_doe 1 year ago | next

                  Advantages include performance gains, resource efficiency, and lower maintenance costs compared to traditional servers.

  • code_queen 1 year ago | prev | next

    What about state and storage? Where do you save the state and how do you manage it?

    • john_doe 1 year ago | next

      I'm using AWS DynamoDB for data storage and AWS Lambda's built-in state management capabilities.