Currency means FAR legally current on AMEL instruments. Of course you need that.

Recency means hours in the last 24, 12, or 6 months. Exactly how much over what time period depends on the airline in question.

100 hours in two years might work if it's in a fighter. Otherwise they'd probably like at least 100-200 in the last year, with plenty in the last six months. More is better much though.

They're looking for two things, depending on the airline. One is train-ability, rusty pilots don't do as well in training statistically.

The other consideration for some airlines apparently, is do you like to fly airplanes (or at least make money)? The recent trend is to look for pilots who are productive, ie fly a lot, fly weekends, and holidays, etc. as opposed to drop a lot of mil leave, hide out on reserve, bid down, call in sick, etc.

No that last isn't really "fair" because you could be on reserve through no fault of your own, and sit reserve on weekends, holidays far from home. Or you might be senior enough to bid weekends and holidays off. But if you fly weekends and holidays, they will assume you don't call in sick much.