ioredis client does not expose property connected

[bjorndown]

We are trying to use apicache with an ioredis client, but we don't see any keys in redis. It seems that the check introduced with 375ccc7 does not work for ioredis because its client does not expose a connected property.

When I monkey-patch the connected property, I can see cache keys in redis.

ioredis sends connection events (https://github.com/luin/ioredis#connection-events).

[jackluo]

Second this issue

[neilhem]

Confirm, using ioredis as redis sentinel client do not save cached value to the Redis

[rosslavery]

Also experiencing this -- had to downgrade to 1.5.1 to fix it in the meantime.

[sidgujrathi]

Checked and confirmed with ^1.5.3, Second this issue 👍

[lukebelbina]

Confirmed that apicache was not working with ioredis for version 1.5.3, downgrading to 1.51 fixed it.