diff --git a/env.go b/env.go
index f3cef1c..37f71f1 100644
--- a/env.go
+++ b/env.go
@@ -83,8 +83,8 @@ func (e *EnvT) T() T {
 // opt - fixture options, nil for default options.
 // f - callback - fixture body.
 // Cache guarantee for call f exactly once for same Cache called and params combination.
-func (e *EnvT) Cache(params interface{}, opt *FixtureOptions, f FixtureCallbackFunc) interface{} {
-	return e.cache(params, opt, f)
+func (e *EnvT) Cache(cacheKey interface{}, opt *FixtureOptions, f FixtureCallbackFunc) interface{} {
+	return e.cache(cacheKey, opt, f)
 }
 
 // CacheWithCleanup call from fixture and manage call f and cache it.
@@ -99,7 +99,7 @@ func (e *EnvT) Cache(params interface{}, opt *FixtureOptions, f FixtureCallbackF
 // f - callback - fixture body.
 // cleanup, returned from f called while fixture cleanup
 // Cache guarantee for call f exactly once for same Cache called and params combination.
-func (e *EnvT) CacheWithCleanup(params interface{}, opt *FixtureOptions, f FixtureCallbackWithCleanupFunc) interface{} {
+func (e *EnvT) CacheWithCleanup(cacheKey interface{}, opt *FixtureOptions, f FixtureCallbackWithCleanupFunc) interface{} {
 	if opt == nil {
 		opt = &FixtureOptions{}
 	}
@@ -116,16 +116,16 @@ func (e *EnvT) CacheWithCleanup(params interface{}, opt *FixtureOptions, f Fixtu
 		}
 	}
 
-	return e.cache(params, opt, fWithoutCleanup)
+	return e.cache(cacheKey, opt, fWithoutCleanup)
 }
 
 // cache must be call from first-level public function
 // UserFunction->EnvFunction->cache for good determine caller name
-func (e *EnvT) cache(params interface{}, opt *FixtureOptions, f FixtureCallbackFunc) interface{} {
+func (e *EnvT) cache(cacheKey interface{}, opt *FixtureOptions, f FixtureCallbackFunc) interface{} {
 	if opt == nil {
 		opt = globalEmptyFixtureOptions
 	}
-	key, err := makeCacheKey(e.t.Name(), params, opt, false)
+	key, err := makeCacheKey(e.t.Name(), cacheKey, opt, false)
 	if err != nil {
 		e.t.Fatalf("failed to create cache key: %v", err)
 		// return not reacheble after Fatalf
diff --git a/env_generic_sugar.go b/env_generic_sugar.go
index f5098de..09e0a0e 100644
--- a/env_generic_sugar.go
+++ b/env_generic_sugar.go
@@ -3,9 +3,9 @@
 
 package fixenv
 
-func Cache[TRes any](env Env, params any, opt *FixtureOptions, f func() (TRes, error)) TRes {
+func Cache[TRes any](env Env, cacheKey any, opt *FixtureOptions, f func() (TRes, error)) TRes {
 	addSkipLevel(&opt)
-	callbackResult := env.Cache(params, opt, func() (res interface{}, err error) {
+	callbackResult := env.Cache(cacheKey, opt, func() (res interface{}, err error) {
 		return f()
 	})
 
@@ -16,9 +16,9 @@ func Cache[TRes any](env Env, params any, opt *FixtureOptions, f func() (TRes, e
 	return res
 }
 
-func CacheWithCleanup[TRes any](env Env, params any, opt *FixtureOptions, f func() (TRes, FixtureCleanupFunc, error)) TRes {
+func CacheWithCleanup[TRes any](env Env, cacheKey any, opt *FixtureOptions, f func() (TRes, FixtureCleanupFunc, error)) TRes {
 	addSkipLevel(&opt)
-	callbackResult := env.CacheWithCleanup(params, opt, func() (res interface{}, cleanup FixtureCleanupFunc, err error) {
+	callbackResult := env.CacheWithCleanup(cacheKey, opt, func() (res interface{}, cleanup FixtureCleanupFunc, err error) {
 		return f()
 	})
 
diff --git a/interface.go b/interface.go
index 85eb82a..38f9b4d 100644
--- a/interface.go
+++ b/interface.go
@@ -10,12 +10,12 @@ type Env interface {
 	// Cache cache result of f calls
 	// f call exactly once for every combination of scope and params
 	// params must be json serializable (deserialize not need)
-	Cache(params interface{}, opt *FixtureOptions, f FixtureCallbackFunc) interface{}
+	Cache(cacheKey interface{}, opt *FixtureOptions, f FixtureCallbackFunc) interface{}
 
 	// CacheWithCleanup cache result of f calls
 	// f call exactly once for every combination of scope and params
 	// params must be json serializable (deserialize not need)
-	CacheWithCleanup(params interface{}, opt *FixtureOptions, f FixtureCallbackWithCleanupFunc) interface{}
+	CacheWithCleanup(cacheKey interface{}, opt *FixtureOptions, f FixtureCallbackWithCleanupFunc) interface{}
 }
 
 var (