[Fusion] Fix spec directive collisions

[michaelstaib]

Fixes #9141

[github-actions]

Fusion Gateway Performance Results

Simple Composite Query

	Req/s	Err%
Constant (50 VUs)	2930.66	0.00%
Ramping (0-500-0 VUs)	3232.54	0.00%

Response Times & Query

	Min	Med	Avg	P90	P95	Max
Constant	0.76ms	15.08ms	16.84ms	30.65ms	35.79ms	171.67ms
Ramping	0.74ms	65.66ms	68.91ms	129.64ms	147.34ms	277.24ms

query TestQuery {
  topProducts(first: 5) {
    inStock
    name
    price
    shippingEstimate
    upc
    weight
    reviews {
      id
      body
      author {
        id
        username
        name
      }
    }
  }
}

---

Deep Recursion Query

	Req/s	Err%
Constant (50 VUs)	739.19	0.00%
Ramping (0-500-0 VUs)	818.37	0.00%

Response Times & Query

	Min	Med	Avg	P90	P95	Max
Constant	8.94ms	62.98ms	66.12ms	81.23ms	89.71ms	344.45ms
Ramping	1.82ms	252.15ms	262.64ms	520.11ms	560.86ms	680.73ms

query TestQuery {
  users {
    id
    username
    name
    reviews {
      id
      body
      product {
        inStock
        name
        price
        shippingEstimate
        upc
        weight
        reviews {
          id
          body
          author {
            id
            username
            name
            reviews {
              id
              body
              product {
                inStock
                name
                price
                shippingEstimate
                upc
                weight
              }
            }
          }
        }
      }
    }
  }
  topProducts(first: 5) {
    inStock
    name
    price
    shippingEstimate
    upc
    weight
    reviews {
      id
      body
      author {
        id
        username
        name
        reviews {
          id
          body
          product {
            inStock
            name
            price
            shippingEstimate
            upc
            weight
          }
        }
      }
    }
  }
}

---

Variable Batching Throughput

	Req/s	Err%
Constant (50 VUs)	23102.35	0.00%
Ramping (0-500-0 VUs)	18393.82	0.00%

Response Times & Query

	Min	Med	Avg	P90	P95	Max
Constant	0.10ms	1.75ms	2.11ms	4.02ms	4.89ms	46.84ms
Ramping	0.10ms	9.54ms	11.53ms	23.62ms	28.48ms	112.56ms

query TestQuery($upc: ID!, $price: Long!, $weight: Long!) {
  productByUpc(upc: $upc) {
    inStock
    shippingEstimate(weight: $weight, price: $price)
  }
}

Variables (5 sets batched per request)

[
  { "upc": "1", "price": 899, "weight": 100 },
  { "upc": "2", "price": 1299, "weight": 1000 },
  { "upc": "3", "price": 15, "weight": 20 },
  { "upc": "4", "price": 499, "weight": 100 },
  { "upc": "5", "price": 1299, "weight": 1000 }
]

---

Run 22160766029 • Commit afdad06 • Thu, 19 Feb 2026 00:14:00 GMT