docs: refresh benchmark results for 1.5.1

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Automated refresh of the Benchmarks section of the README, generated by this run.

Version label: 1.5.1 · Trigger: release

Perf numbers come from a shared GitHub-hosted runner and are noisy between runs, so treat
movement within a few percent as noise rather than a regression.

Full results

lambda-api benchmark results

Generated 2026-08-22 16:38:20 UTC · lambda-api v1.5.1 · Node 20.20.2 · AMD EPYC 7763 64-Core Processor (4 cores) · linux/x64

API Gateway REST (v1) — throughput (ops/sec, higher is better)

Framework	get-json	path-param	post-json	routing-50	not-found
baseline	2,946,788	2,283,701	1,206,887	1,952,970	2,268,975
middy 6.4.5	364,760	267,488	30,372	158,998	66,920
lambda-api 1.5.1	126,005	113,673	113,737	114,210	49,887
fastify 5.8.5	12,672	15,589	6,778	16,691	14,714
hono 4.12.34	11,437	17,141	9,847	16,968	17,686
serverless-express 4.22.2	8,274	10,642	5,215	9,714	10,810

API Gateway REST (v1) — latency (avg / p99, µs, lower is better)

Framework	get-json	path-param	post-json	routing-50	not-found
baseline	0.34 / 0.65	0.44 / 0.82	0.83 / 1.04	0.51 / 0.59	0.44 / 0.50
middy 6.4.5	2.74 / 3.87	3.74 / 4.16	32.9 / 35.7	6.29 / 6.81	14.9 / 15.3
lambda-api 1.5.1	7.94 / 7.98	8.80 / 8.92	8.79 / 8.89	8.76 / 8.82	20.0 / 19.0
fastify 5.8.5	78.9 / 204	64.1 / 116	148 / 305	59.9 / 117	68.0 / 125
hono 4.12.34	87.4 / 329	58.3 / 117	102 / 220	58.9 / 110	56.5 / 109
serverless-express 4.22.2	121 / 275	94.0 / 171	192 / 417	103 / 194	92.5 / 164

API Gateway HTTP (v2) — throughput (ops/sec, higher is better)

Framework	get-json	path-param	post-json	routing-50	not-found
baseline	2,059,266	1,749,200	1,049,495	1,560,009	1,733,433
middy 6.4.5	361,053	266,939	30,370	157,796	66,660
lambda-api 1.5.1	115,108	101,949	101,790	101,919	48,157
hono 4.12.34	19,523	18,120	11,685	18,628	19,206
fastify 5.8.5	16,831	13,798	7,120	15,847	15,042
serverless-express 4.22.2	10,414	10,904	6,527	9,935	10,912

API Gateway HTTP (v2) — latency (avg / p99, µs, lower is better)

Framework	get-json	path-param	post-json	routing-50	not-found
baseline	0.49 / 1.06	0.57 / 1.00	0.95 / 1.70	0.64 / 1.12	0.58 / 1.14
middy 6.4.5	2.77 / 3.26	3.75 / 4.20	32.9 / 35.1	6.34 / 6.70	15.0 / 15.7
lambda-api 1.5.1	8.69 / 8.77	9.81 / 9.86	9.82 / 9.91	9.81 / 9.89	20.8 / 22.9
hono 4.12.34	51.2 / 101	55.2 / 56.6	85.6 / 148	53.7 / 98.2	52.1 / 96.4
fastify 5.8.5	59.4 / 58.7	72.5 / 62.9	140 / 317	63.1 / 70.5	66.5 / 63.3
serverless-express 4.22.2	96.0 / 226	91.7 / 169	153 / 275	101 / 168	91.6 / 153