public String getKey(final RuleData ruleData) {
        return String.join("_", ruleData.getSelectorId(), ruleData.getId());
    }
return rule handle cache key name.

@param ruleData ruleData
@return string string
shenyu-plugin/shenyu-plugin-base/src/main/java/org/apache/shenyu/plugin/base/utils/CacheKeyUtils.java