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[Fusion] Add single-flight coalescing for operation planning#9149

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michaelstaib merged 1 commit intomainfrom
mst/planner-inflight
Feb 19, 2026
Merged

[Fusion] Add single-flight coalescing for operation planning#9149
michaelstaib merged 1 commit intomainfrom
mst/planner-inflight

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Fusion Gateway Performance Results

Simple Composite Query

Req/s Err%
Constant (50 VUs) 2946.83 0.00%
Ramping (0-500-0 VUs) 3234.85 0.00%
Response Times & Query
Min Med Avg P90 P95 Max
Constant 0.76ms 14.99ms 16.75ms 30.89ms 35.84ms 173.33ms
Ramping 0.88ms 65.55ms 68.92ms 131.43ms 149.52ms 279.59ms
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) 743.76 0.00%
Ramping (0-500-0 VUs) 839.97 0.00%
Response Times & Query
Min Med Avg P90 P95 Max
Constant 9.00ms 62.63ms 65.68ms 80.77ms 89.67ms 342.60ms
Ramping 1.81ms 257.89ms 256.44ms 490.53ms 527.35ms 671.07ms
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) 23704.36 0.00%
Ramping (0-500-0 VUs) 18595.80 0.00%
Response Times & Query
Min Med Avg P90 P95 Max
Constant 0.10ms 1.70ms 2.06ms 3.94ms 4.82ms 54.66ms
Ramping 0.10ms 9.44ms 11.39ms 23.24ms 28.13ms 119.84ms
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 22178033865 • Commit ee58656 • Thu, 19 Feb 2026 10:46:41 GMT

@michaelstaib michaelstaib merged commit 6f2358a into main Feb 19, 2026
117 checks passed
@michaelstaib michaelstaib deleted the mst/planner-inflight branch February 19, 2026 11:58
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codecov Bot commented Feb 19, 2026

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (ec80581) to head (5a6e5ef).
⚠️ Report is 11 commits behind head on main.

Additional details and impacted files
@@     Coverage Diff      @@
##   main   #9149   +/-   ##
============================
============================

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