Implementation Guidelines

Production

Tuned

Engine

Must use the framework standard JSON serialization and standard HTTP/2 cleartext configuration. No pre-serialized caches, no custom serializers, no bypassing the framework response pipeline.

May use alternative JSON libraries (simd-json, sonic-json), tune HTTP/2 stream and window parameters, and apply framework-specific optimizations. The JSON body must still be serialized per request from live data — pre-computed / pre-serialized response caches or response-lookup tables are not allowed on either type; they short-circuit the serialization workload the profile exists to measure.

No specific rules. Ranked separately from frameworks.

Same JSON Processing workload (dataset slice + per-item derived field + JSON serialization) served over HTTP/2 cleartext. Exercises the JSON pipeline under multiplexed h2 streams without the TLS CPU tax the baseline-h2 profile carries.

Port: 8082 Connections: 1,024, 4,096 Concurrent streams per connection: 32 Negotiation: prior-knowledge (h2load -p h2c)

Workload

The load generator rotates through the same seven (count, m) pairs as the H/1 JSON profile:

(1, 3), (5, 7), (10, 2), (15, 5), (25, 4), (40, 8), (50, 6)

count selects a slice of the shared /data/dataset.json (50 items); m is the per-request multiplier that feeds into each item’s total = price × quantity × m. Different multipliers per request ensure naive caching by path returns wrong values.

What it measures

JSON serialization throughput over h2c (no TLS in the way)
h2 multiplexing efficiency when response bodies vary in size (1 → 50 items)
How cleanly the framework refuses HTTP/1.1 on the h2c-only port (validated per baseline-h2c’s anti-cheat)

Expected request/response

GET /json/5?m=3 HTTP/2

HTTP/2 200 OK
Content-Type: application/json

{"count":5,"items":[…5 items, each with total = price*quantity*3…]}

Parameters

Parameter	Value
Endpoint	`GET /json/{count}?m={multiplier}`
Connections	1,024, 4,096
Streams per connection	32 (`-m 32`)
Duration	5s
Runs	3 (best taken)
Load generator	h2load with `-p h2c` and URI rotation (`-i json-h2c-uris.txt`)

Validation