chini-train-heldout-0005-dp3-infra

In-App Notifications Fanout

moderate infra problem: in-app notifications fanout

Source: chini-train synth generator v0.1

Prompt

Design a system for: in-app notifications fanout (domain: SWE backend / infra).

Tier DP3 (moderate). 6-9 nodes, two stress scenarios (spike + one of cascade/outage), realistic criteria. Sweet spot.

Constraints:
- At most 10 components on the canvas.
- Monthly cost ceiling: $459 USD. Required behaviors: storage, queue, circuitbreaker, retry.

Return a Chinilla CanvasState that handles the listed scenarios. Include trigger components for each entry point and at least one terminal storage / sink so the simulator can score delivery.

Constraints

Max components: 10
Required behaviors: storage, queue, circuitbreaker, retry
Monthly budget: $459

Stress scenarios

Baseline traffic

baseline

Steady ambient load with no failures.

Traffic spike

spike

Traffic suddenly multiplies. The hot path must hold.

Cascading failure

cascade

An initial fault propagates through dependent components.

Pass criteria (overall)

Min stability score: 73
Max drop rate: 11.2%
Min delivery rate: 83.7%
Max errors: 8

Submit your run

Submissions go through the chini-bench CLI. It calls your model with your key, scores the result locally, and posts to the leaderboard. Nothing leaves your machine except the canvas it produces.

End-to-end:

pip install git+https://github.com/collapseindex/chini-bench-cli.git
export OPENROUTER_API_KEY=...

chini-bench run chini-train-heldout-0005-dp3-infra \
  --provider openrouter --model google/gemini-2.0-flash-001 \
  --as alice

Or inspect the prompt first:

chini-bench prompt chini-train-heldout-0005-dp3-infra

Providers: openai · anthropic · google · openrouter · ollama

Leaderboard

Rank	Submitter	Model	Score	Stability	Delivery	Design	Pass
#1	chini-train-08	rl_v07_pilot_a10b_k8_s4 single-shot	81	60.0	67.0	100.0	✗
#2	chini-train-08	rl_v07_pilot_a10b_k8_s1 single-shot	79	46.0	76.0	100.0	✗
#3	chini-train-08	rl_v07_pilot_a10b_k8_s0 single-shot	76	52.0	52.0	100.0	✗
#4	chini-train-08	rl_v07_pilot_a10b_k8_s6 single-shot	76	52.0	52.0	100.0	✗
#5	chini-train-08	rl_v07_pilot_a10b_k8_s7 single-shot	76	52.0	52.0	100.0	✗
#6	chini-train-08	fmt_a_7b single-shot	75	51.0	50.0	100.0	✗
#7	chini-train-08	fmt_a_7b single-shot	75	51.0	50.0	100.0	✗
#8	chini-train-08	fmt_a_7b single-shot	75	51.0	50.0	100.0	✗
#9	chini-train-08	rl_v07_pilot_a10b_k8_s2 single-shot	75	51.0	50.0	100.0	✗
#10	chini-train-08	fmt_a_v5_mixed_7b single-shot	74	49.0	48.0	100.0	✗
#11	chini-train-08	fmt_a_v5 single-shot	74	49.0	48.0	100.0	✗
#12	chini-train-08	fmtA single-shot	74	49.0	48.0	100.0	✗
#13	chini-train-08	rl_v06_run2 single-shot	73	47.0	46.0	100.0	✗
#14	chini-train-08	fmt_a_v2 single-shot	72	46.0	44.0	100.0	✗
#15	chini-train-08	fmt_a_3b single-shot	72	46.0	44.0	100.0	✗
#16	chini-train-08	fmt_a_3b single-shot	72	46.0	44.0	100.0	✗
#17	chini-train-08	fmt_a_v4_opus_7b single-shot	72	56.0	55.0	75.0	✗
#18	chini-train-08	fmt_a_v4_opus_7b single-shot	72	56.0	55.0	75.0	✗
#19	chini-train-08	rl_v07_pilot_a10b_k8_s5 single-shot	72	46.0	44.0	100.0	✗
#20	chini-train-08	rl_v07_full single-shot	72	53.0	53.0	100.0	✗
#21	chini-train-08	base_7b single-shot	71	53.0	54.0	75.0	✗
#22	chini-train-08	base_7b single-shot	71	53.0	54.0	75.0	✗
#23	chini-train-08	base_7b single-shot	71	53.0	54.0	75.0	✗
#24	chini-train-08	base single-shot	71	53.0	54.0	75.0	✗
#25	chini-train-08	fmt_a single-shot	70	52.0	50.0	75.0	✗
#26	chini-train-08	rl_v07_pilot_a10b_k8_s3 single-shot	69	49.0	48.0	100.0	✗
#27	chini-train-08	base single-shot	66	53.0	29.0	75.0	✗
#28	chini-train-08	base_3b single-shot	66	53.0	29.0	75.0	✗
#29	chini-train-08	base_3b single-shot	66	53.0	29.0	75.0	✗
#30	chini-train-08	base single-shot	66	53.0	29.0	75.0	✗

Per-scenario breakdown of the top run

Scenario	Health	Drop rate	Delivered	Pass
baseline	81.0	1.7%	29	✓
spike-1	63.0	14.8%	832	✗
cascade-2	36.0	53.2%	11	✗

How is this scored? →