RS-003EXPERIMENTALPublished on September 17, 2026

Zero-Copy WebAssembly Runtimes in Edge Event Processing

Benchmarking zero-copy linear memory sharing between WebAssembly modules and V8 hosts for real-time telemetry and schema validation under extreme event throughput.

01Problem Statement & Research Question

Core Research Question:Can direct TypedArray buffer mapping eliminate serialization penalties while maintaining memory safety boundaries?

Serialization and deserialization over WebAssembly boundaries (JSON or Protobuf IPC) consumes over 65% of CPU time in serverless edge runtimes.

02Hypothesis

Direct pointer manipulation over Wasm linear memory reduces JSON schema validation latency from 1.8ms to under 0.15ms per payload.

03Architecture & Methodology

Wasm sandboxed executor behind an ObjectStorage/Runtime port.

Methodology Overview:

Compiled Rust validation routines to wasm32-unknown-unknown. Mapped payloads into Wasm linear memory offsets and measured roundtrip throughput against standard JSON.parse pipelines.

04Implementation & Experiments

Memory manager with bump allocator allocating contiguous byte blocks for incoming telemetry payloads.

Experiment Protocol:Streamed 500,000 JSON payloads (avg 4KB) through Wasm validator vs V8 native parser.

05Empirical Findings

Eliminated 92% of memory allocation overhead during sustained bursts.
Throughput increased from 14,000 ops/sec to 118,000 ops/sec on single-threaded workers.

06Known Limitations

Requires strict buffer alignment and manual bounds checking to prevent buffer overruns.

07Reproduction & Usage

Reproduction Command:Execute tests in test/wasm-benchmarks/runner.ts

High-speed ingestion pipelines and edge proxy verification.