Stories with Tag Java Virtual Machine

• Chicory: A JVM native WebAssembly runtime

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  Posted: 2025-02-25 11:22:06

  Verbose tl;dr

  Chicory is a new WebAssembly runtime built specifically for the Java Virtual Machine (JVM). It aims to bring the performance and portability benefits of Wasm to JVM environments by allowing developers to seamlessly execute Wasm modules directly within their Java applications. Chicory achieves this through a combination of ahead-of-time (AOT) compilation to native code via GraalVM Native Image and a runtime library implemented in Java. This approach allows for efficient interoperability between Java code and Wasm modules, potentially opening up new possibilities for leveraging Wasm's growing ecosystem within established Java systems.

  The blog post introduces Chicory, a novel runtime environment designed specifically for executing WebAssembly (Wasm) code directly on the Java Virtual Machine (JVM). Chicory aims to bridge the gap between the Wasm ecosystem and the vast world of Java libraries and frameworks, enabling developers to seamlessly integrate Wasm modules into existing Java applications. This integration allows leveraging the performance benefits of Wasm while capitalizing on the maturity and richness of the Java ecosystem.

  Chicory achieves this integration through a two-pronged approach. Firstly, it compiles Wasm modules into Java bytecode, allowing the JVM to execute them natively. This compilation process leverages the existing capabilities of the JVM, ensuring efficient execution and optimization of the Wasm code. Secondly, Chicory provides a meticulously crafted interoperability layer that facilitates smooth communication between Java code and Wasm modules. This interoperability layer handles data marshalling and conversion between Java types and Wasm types, enabling seamless data exchange and function calls between the two environments.

  One of the primary advantages of using Chicory is performance. By compiling Wasm to JVM bytecode, Chicory can harness the JVM's just-in-time (JIT) compilation and optimization capabilities, leading to potentially significant performance improvements compared to interpreted Wasm runtimes. This performance advantage is particularly important for computationally intensive tasks or applications requiring low latency.

  Another key benefit is access to the extensive Java ecosystem. Chicory allows Wasm modules to directly utilize existing Java libraries and frameworks, unlocking a wealth of functionality for Wasm developers. This access eliminates the need to reimplement common functionalities within the Wasm environment, accelerating development and reducing code duplication.

  Furthermore, Chicory simplifies the deployment of Wasm modules. By running Wasm directly on the JVM, developers can leverage existing Java deployment infrastructure and tools, streamlining the deployment process and reducing operational overhead.

  The blog post highlights Chicory's current status as an early-stage project, emphasizing the potential for future development and improvements. It also mentions ongoing work on refining the interoperability layer and expanding support for various Wasm features. The ultimate goal is to provide a robust and performant runtime environment that fully integrates Wasm into the JVM, empowering developers to build high-performance applications that combine the best of both worlds. The post encourages community involvement and contributions to help shape the future of Chicory and its integration with the Wasm ecosystem.

  • WebAssembly
  • Wasm
  • JVM
  • Java Virtual Machine
  • Runtime
  • Native
  • Chicory
  • AOT Compilation
  • Ahead-of-Time Compilation
  • Web Development
  • Java
  • Kotlin
  • Scala
  • GraalVM

  Summary of Comments ( 86 )
  https://news.ycombinator.com/item?id=43170545

  Verbose tl;dr

  Hacker News users discussed Chicory's potential, limitations, and context within the WebAssembly ecosystem. Some expressed excitement about its JVM integration, seeing it as a valuable tool for leveraging existing Java libraries and infrastructure within WebAssembly applications. Others raised concerns about performance, particularly regarding garbage collection and its suitability for computationally intensive tasks. Comparisons were made to other WebAssembly runtimes like Wasmtime and Wasmer, with discussion around the trade-offs between performance, portability, and features. Several comments questioned the practical benefits of running WebAssembly within the JVM, particularly given the existing rich Java ecosystem. There was also skepticism about WebAssembly's overall adoption and its role in the broader software landscape.

  The Hacker News post titled "Chicory: A JVM native WebAssembly runtime" sparked a discussion thread with several insightful comments. Many commenters focused on the potential benefits and drawbacks of using WebAssembly (Wasm) within the JVM ecosystem.

  One recurring theme was the exploration of use cases for Chicory. Some commenters questioned the advantages of using Wasm within the JVM compared to existing JVM languages like Kotlin or Scala. They pondered whether Wasm offered significant performance gains or other benefits that would justify the added complexity of integrating another runtime environment. Others suggested potential niches, such as running code from other languages compiled to Wasm, or leveraging Wasm's sandboxing capabilities for security-sensitive operations.

  Performance was another key area of discussion. Some commenters expressed skepticism about Wasm's performance within the JVM, particularly concerning garbage collection and interoperability with JVM objects. They highlighted the potential overhead of bridging the gap between the Wasm and JVM environments.

  Several commenters drew comparisons between Chicory and GraalVM's native image functionality. They debated whether using Wasm within the JVM offered any advantages over compiling JVM languages to native code directly. The discussion touched upon topics such as startup time, memory footprint, and overall execution speed.

  Some commenters expressed interest in the technical details of Chicory's implementation, such as its garbage collection strategy and its approach to handling Wasm system calls. They inquired about the project's maturity and its roadmap for future development.

  A few commenters mentioned alternative approaches to running Wasm in the JVM, such as using Wasmer or Wasmtime. They compared these existing solutions with Chicory, discussing their respective strengths and weaknesses.

  Overall, the comments on the Hacker News post reflected a cautious optimism about Chicory. While acknowledging the potential of Wasm within the JVM, commenters raised important questions about its practical benefits and technical challenges. The discussion highlighted the need for further exploration and benchmarking to determine Chicory's viability in real-world scenarios.

• Inboxbooster (YC W17) Is Hiring

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  Posted: 2025-01-25 12:01:09

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  Inboxbooster, a Y Combinator-backed company, is hiring a fully remote JVM Bytecode Engineer. This role involves working on their core email deliverability product by developing and maintaining a Java agent that modifies bytecode at runtime. Ideal candidates are proficient in Java, bytecode manipulation libraries like ASM or Javassist, and have experience with performance optimization and debugging. Familiarity with email deliverability concepts is a plus.

  Inboxbooster, a company nurtured by the prestigious Y Combinator accelerator during the Winter 2017 cohort, is actively seeking a highly skilled and experienced Java Virtual Machine (JVM) Bytecode Engineer to join their ranks. This fully remote position offers the exceptional candidate the opportunity to contribute to the cutting edge of email deliverability optimization, working on a sophisticated platform that utilizes intricate bytecode manipulation techniques. The ideal candidate possesses an exceptionally strong command of JVM bytecode internals and related tooling. This individual must be profoundly comfortable diving deep into the intricacies of Java class file structure and be adept at manipulating bytecode at a granular level. Furthermore, proficiency in JVM-based languages, such as Java, Kotlin, or Scala, is a prerequisite for this role. Experience with dynamic instrumentation frameworks, including ASM, Javassist, or ByteBuddy, is considered highly advantageous.

  This role entails the design, development, and maintenance of sophisticated Java agents. These agents will be instrumental in instrumenting and manipulating the behavior of third-party Java applications, thereby enhancing the effectiveness of Inboxbooster's email deliverability platform. The selected candidate will be responsible for not just implementing these agents but also for their ongoing refinement and optimization, ensuring they remain both efficient and effective. The position offers a challenging yet rewarding environment where the successful candidate will have a substantial impact on the core technology behind Inboxbooster's service, directly contributing to the company's ongoing success. This role represents an exciting opportunity for a highly motivated and technically adept individual to push the boundaries of JVM bytecode engineering in a practical, real-world context. The fully remote nature of the position provides the added benefit of location flexibility.

  • Y Combinator
  • YC W17
  • Inboxbooster
  • Hiring
  • Job
  • JVM
  • bytecode
  • Engineer
  • Remote
  • software engineering
  • Java Virtual Machine
  • Full-time
  • startup
  • Tech Jobs

  Summary of Comments ( 0 )
  https://news.ycombinator.com/item?id=42821138

  Verbose tl;dr

  Hacker News users discussing the Inboxbooster job posting largely focused on the low salary range ($60k-$80k) offered for a JVM Bytecode Engineer, especially given the specialized and in-demand nature of the skillset. Many commenters found this range significantly below market value, even considering the potential for remote work. Some speculated about the reasoning, suggesting either a misjudgment of the market by the company or a targeting of less experienced engineers. The remote aspect was also discussed, with some suggesting it might be a way to justify the lower salary, while others pointed out that top talent in this area can command high salaries regardless of location. A few commenters expressed skepticism about the YC backing given the seemingly low budget for engineering talent.

  The Hacker News post discussing Inboxbooster's hiring of a JVM Bytecode Engineer generated several comments, primarily focusing on the unusual nature of needing such a specialized role and speculating on the company's underlying product or technology.

  One commenter questioned the specific use case for bytecode manipulation, wondering if it was for instrumentation, optimization, or some form of code generation. They expressed interest in understanding the practical applications within Inboxbooster's operations. This comment highlights the niche nature of bytecode engineering and the curiosity it sparked among technically-minded readers.

  Another commenter, identifying themselves as an ex-employee of Inboxbooster, clarified that the company works with email deliverability. This information provided context for the bytecode engineer role, suggesting its potential involvement in analyzing or manipulating email content or related processes, possibly for optimization or anti-spam measures. This comment offered valuable insider information, shedding light on the company's domain and the potential relevance of the advertised position.

  Further discussion revolved around the perceived complexity of email deliverability and the challenges faced by companies in this space. This context further reinforced the idea that the bytecode engineer role likely plays a crucial, albeit highly specialized, part in Inboxbooster's technological approach to email delivery optimization.

  Several commenters expressed skepticism or mild amusement at the highly specific nature of the required expertise. This reaction underscores the unusual nature of the job posting and its departure from more typical software engineering roles.

  Overall, the comments reflect a mix of curiosity about the specific application of bytecode manipulation within Inboxbooster, acknowledgement of the complexities of email deliverability, and a degree of intrigue regarding the company's technology and the unique skills they seek.