How We Reduced AWS Costs by 40% Using GraalVM and Serverless Java

Case Study: How We Reduced AWS Costs by 40% Using GraalVM and Serverless Java

At Associative, a premier software development firm headquartered in Pune, India, we are passionate about transforming visionary ideas into scalable, cost-effective digital realities. As a team of dedicated innovators and problem-solvers, our mission is to guide businesses through the complexities of the digital landscape.

One of the most common challenges we see with enterprise clients migrating to the cloud is managing unexpected infrastructure costs. Recently, our Cloud & DevOps team tackled a significant optimization challenge. Here is the story of how we reduced AWS costs by 40% using GraalVM and serverless Java for a high-traffic enterprise application.

The Challenge: Java’s “Cold Start” Problem on AWS Lambda

Java (specifically Spring Boot and Jakarta EE) is a cornerstone of our back-end development stack. It offers robust, scalable server-side logic. However, when deployed in a serverless environment like AWS Lambda, traditional Java applications face a notorious issue: cold starts.

Because the Java Virtual Machine (JVM) takes time to initialize and requires a relatively large memory footprint to run effectively, AWS Lambda functions written in standard Java can take several seconds to execute their first request. To compensate for this performance hit, clients often over-provision Lambda memory (which speeds up CPU allocation) or rely on Provisioned Concurrency. Both workarounds drastically inflate AWS billing.

The Solution: GraalVM Native Images

To drive growth and efficiency for our client, we completely re-architected the deployment pipeline without rewriting the core business logic. The key was GraalVM.

GraalVM is an advanced JDK that features an Ahead-Of-Time (AOT) compiler. Instead of deploying a heavy JVM and bytecode to AWS Lambda, we used GraalVM to compile the Java application directly into a standalone, platform-specific native executable.

Implementation Steps:

  1. Framework Optimization: We migrated the traditional Spring Boot application to a framework optimized for GraalVM.

  2. AOT Compilation: We utilized Docker and robust CI/CD pipelines (Jenkins) to compile the Native Image during the build phase.

  3. Serverless Deployment: We deployed the lightweight native executable to a Custom AWS Lambda Runtime.

The Results: A 40% Reduction in AWS Costs

The transformation was immediate and measurable:

  • Lightning-Fast Cold Starts: Startup times dropped from roughly 4 seconds to under 200 milliseconds.

  • Reduced Memory Footprint: We were able to slash the allocated memory for the Lambda functions by more than half, as the native image required a fraction of the RAM compared to a full JVM.

  • Total Savings: By right-sizing the memory allocation and eliminating the need for Provisioned Concurrency, we reduced AWS costs by 40% using GraalVM and serverless Java.

About Associative: Your Partner in Digital Transformation

Established on February 1, 2021, and formally registered with the Registrar of Firms (ROF), Pune, Associative operates with unyielding transparency and regulatory compliance. Whether you need cloud optimization, complex web applications, or next-generation AI, we offer a one-stop-shop for businesses seeking to innovate.

Why Choose Us?

  • Accredited Expertise: We are a proud Adobe Silver Solution Partner and an Official Reseller Partner of Strapi.

  • Massive Technology Landscape: * Cloud & DevOps: AWS, Google Cloud, Azure, Docker, Kubernetes, Terraform.

    • Back-End: Java (Spring Boot), Node.js, Python, PHP, Ruby on Rails.

    • Front-End: React, Angular, Vue.js, WebAssembly (Wasm).

    • Advanced Tech: AI/ML (TensorFlow, PyTorch, LangChain), Blockchain (Solidity, Ethereum), and Game Dev/AR/VR (Unreal Engine 5, Apple Vision Pro).

  • Innovation & R&D: We are at the forefront of tech with our flagship project, NexusReal: Intelligence Fused Reality, featuring interactive AI avatars and realistic human cloning using NeRFs.

Operational Excellence & Transparency

Our foundation is built on open communication and a client-centric approach:

  • Transparent Billing: We operate strictly on a time-and-materials basis. Invoices are submitted daily, weekly, or by milestone. You only pay for the work performed.

  • Strict Confidentiality: We adhere to rigorous NDAs, maintain no public portfolio to protect your IP, and guarantee 100% ownership of source code upon final payment.

  • Flexible Engagement: We operate Monday through Saturday, offering variable engagement models from 3 to 9 hours per day.

Let’s Build Your Scalable Digital Reality

Whether you want to optimize your cloud architecture or build a product from the ground up, our developers work from our secure offices to bring your vision to life.

Associative Contact Information:

  • Address: Khandve Complex, Yojana Nagar, Lohegaon – Wagholi Road, Lohegaon, Pune, Maharashtra, India – 411047

  • Office Hours: 10:00 AM to 8:00 PM

  • WhatsApp: +91 9028850524

  • Email: info@associative.in

  • Website: https://associative.in

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How We Reduced AWS Costs by 40% Using GraalVM and Serverless Java

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