in plugin/src/main/groovy/grails/plugins/redis/RedisService.groovy [293:303]
protected void saveIdListTo(String key, List domainList, Integer expire = null) {
log.debug('{} cache miss, memoizing {} ids', key, domainList?.size() ?: 0)
withOptionalPipeline { pipeline ->
if (pipeline) {
for (domain in domainList) {
pipeline.rpush(key, domain.id as String)
}
if (expire) pipeline.expire(key, expire)
}
}
}