optimized filter params replacement to use strings.Replacer for a single pass

tools/search/filter.go

@@ -56,9 +56,13 @@ func (f FilterData) BuildExprWithLimit(
 	raw := string(f)
 
 	// replace the placeholder params in the raw string filter
+	if len(placeholderReplacements) > 0 {
+		replacements := make([]string, 0, len(placeholderReplacements[0])*2)
+
 		for _, p := range placeholderReplacements {
 			for key, value := range p {
 				var replacement string
+
 				switch v := value.(type) {
 				case nil:
 					replacement = "null"
@@ -75,10 +79,15 @@ func (f FilterData) BuildExprWithLimit(
 
 					replacement = strconv.Quote(replacement)
 				}
-			raw = strings.ReplaceAll(raw, "{:"+key+"}", replacement)
+
+				replacements = append(replacements, "{:"+key+"}", replacement)
 			}
 		}
 
+		replacer := strings.NewReplacer(replacements...)
+		raw = replacer.Replace(raw)
+	}
+
 	cacheKey := raw + "/" + strconv.Itoa(maxExpressions)
 
 	if data, ok := parsedFilterData.GetOk(cacheKey); ok {