feat: Changes default execution strategy to concurrent

Author: NeedleInAJayStack

Sources/GraphQL/GraphQL.swift

@@ -66,11 +66,6 @@ public typealias SubscriptionEventStream = EventStream<Future<GraphQLResult>>
 /// may wish to separate the validation and execution phases to a static time
 /// tooling step, and a server runtime step.
 ///
-/// - parameter queryStrategy:        The field execution strategy to use for query requests
-/// - parameter mutationStrategy:     The field execution strategy to use for mutation requests
-/// - parameter subscriptionStrategy: The field execution strategy to use for subscription requests
-/// - parameter instrumentation:      The instrumentation implementation to call during the parsing,
-/// validating, execution, and field resolution stages.
 /// - parameter schema:               The GraphQL type system to use when validating and executing a
 /// query.
 /// - parameter request:              A GraphQL language formatted string representing the requested
@@ -92,9 +87,9 @@ public typealias SubscriptionEventStream = EventStream<Future<GraphQLResult>>
 /// and there will be an error inside `errors` specifying the reason for the failure and the path of
 /// the failed field.
 public func graphql(
-    queryStrategy: QueryFieldExecutionStrategy = SerialFieldExecutionStrategy(),
+    queryStrategy: QueryFieldExecutionStrategy = ConcurrentFieldExecutionStrategy(),
     mutationStrategy: MutationFieldExecutionStrategy = SerialFieldExecutionStrategy(),
-    subscriptionStrategy: SubscriptionFieldExecutionStrategy = SerialFieldExecutionStrategy(),
+    subscriptionStrategy: SubscriptionFieldExecutionStrategy = ConcurrentFieldExecutionStrategy(),
     instrumentation: Instrumentation = NoOpInstrumentation,
     validationRules: [(ValidationContext) -> Visitor] = [],
     schema: GraphQLSchema,
@@ -161,9 +156,9 @@ public func graphql(
 /// and there will be an error inside `errors` specifying the reason for the failure and the path of
 /// the failed field.
 public func graphql<Retrieval: PersistedQueryRetrieval>(
-    queryStrategy: QueryFieldExecutionStrategy = SerialFieldExecutionStrategy(),
+    queryStrategy: QueryFieldExecutionStrategy = ConcurrentFieldExecutionStrategy(),
     mutationStrategy: MutationFieldExecutionStrategy = SerialFieldExecutionStrategy(),
-    subscriptionStrategy: SubscriptionFieldExecutionStrategy = SerialFieldExecutionStrategy(),
+    subscriptionStrategy: SubscriptionFieldExecutionStrategy = ConcurrentFieldExecutionStrategy(),
     instrumentation: Instrumentation = NoOpInstrumentation,
     queryRetrieval: Retrieval,
     queryId: Retrieval.Id,
@@ -235,9 +230,9 @@ public func graphql<Retrieval: PersistedQueryRetrieval>(
 /// will be an error inside `errors` specifying the reason for the failure and the path of the
 /// failed field.
 public func graphqlSubscribe(
-    queryStrategy: QueryFieldExecutionStrategy = SerialFieldExecutionStrategy(),
+    queryStrategy: QueryFieldExecutionStrategy = ConcurrentFieldExecutionStrategy(),
     mutationStrategy: MutationFieldExecutionStrategy = SerialFieldExecutionStrategy(),
-    subscriptionStrategy: SubscriptionFieldExecutionStrategy = SerialFieldExecutionStrategy(),
+    subscriptionStrategy: SubscriptionFieldExecutionStrategy = ConcurrentFieldExecutionStrategy(),
     instrumentation: Instrumentation = NoOpInstrumentation,
     validationRules: [(ValidationContext) -> Visitor] = [],
     schema: GraphQLSchema,
@@ -316,9 +311,9 @@ public func graphqlSubscribe(
 /// the failure and the path of the failed field.
 @available(macOS 10.15, iOS 15, watchOS 8, tvOS 15, *)
 public func graphql(
-    queryStrategy: QueryFieldExecutionStrategy = SerialFieldExecutionStrategy(),
+    queryStrategy: QueryFieldExecutionStrategy = ConcurrentFieldExecutionStrategy(),
     mutationStrategy: MutationFieldExecutionStrategy = SerialFieldExecutionStrategy(),
-    subscriptionStrategy: SubscriptionFieldExecutionStrategy = SerialFieldExecutionStrategy(),
+    subscriptionStrategy: SubscriptionFieldExecutionStrategy = ConcurrentFieldExecutionStrategy(),
     instrumentation: Instrumentation = NoOpInstrumentation,
     schema: GraphQLSchema,
     request: String,
@@ -383,9 +378,9 @@ public func graphql(
 /// failed field.
 @available(macOS 10.15, iOS 15, watchOS 8, tvOS 15, *)
 public func graphqlSubscribe(
-    queryStrategy: QueryFieldExecutionStrategy = SerialFieldExecutionStrategy(),
+    queryStrategy: QueryFieldExecutionStrategy = ConcurrentFieldExecutionStrategy(),
     mutationStrategy: MutationFieldExecutionStrategy = SerialFieldExecutionStrategy(),
-    subscriptionStrategy: SubscriptionFieldExecutionStrategy = SerialFieldExecutionStrategy(),
+    subscriptionStrategy: SubscriptionFieldExecutionStrategy = ConcurrentFieldExecutionStrategy(),
     instrumentation: Instrumentation = NoOpInstrumentation,
     schema: GraphQLSchema,
     request: String,