The hit/miss ratio in Redis is used to evaluate the efficiency of your cache. Higher hit/miss ratio indicates that more queries are being fulfilled through the cache, which results in better performance.
Redis doesn't provide direct commands to get hit/miss ratio. However, you can get this data using
INFO stats command which provides a lot of statistics including
keyspace_misses. In Node.js, using
node-redis, you can do it like this:
undefinedbefore calculating the ratio to avoid
Not checking for zero in denominator when calculating hit/miss ratio which might lead to
keyspace_misses is 0.
Q: What can be done if the hit/miss ratio is too low? A: Low hit/miss ratio indicates that your cache isn't being utilized well. Consider revising your caching strategy, potentially adding more data to cache or adjusting cache expiration policies.