With electrolytic caps and temerature two things need to be watched.
1) you dont cook the electrolytic and fook it up, ie take a 85C cap to 120C they will oooz and smell
2) WATCH THE VOLTAGE RATING!!!!!
the capacitance stays pretty stable (within the tolerance) BUT the voltage rating comes down!!!. I have some 35V electrolytic and at 90C their rating down to 25V, since it is on a 15V rail that headroom is fine!!
you dont watch the de-rating of voltage and well BOOM!!!!!!
Equally the ripple-current rating will come down. Since current will heat the cap via its ESR.
Now as to what ripple-current is. Think of a diode-bridge with a resistive load and a capacitor TANK for smoothing. There will be some DC-link ripple that follows the 50Hz from the mains.
That ripple as far as the capacitor is concerned is charge building up its voltage and charge decreasing it voltage, ie current-flow, which in turn it a ripple == current ripple
The current-ripple must not exceed the rating of a cap - overcurrent caps are worse then over-voltaging caps!!! BOOOOOOM.
We have banks of electrolytics closing on 10mF in a DC-link for a 150kW generator, it is sitting in a ambient of abt 60C and they are fine, rated at 600V for a 350V link room-temperature
As to your question
what the hell is the capacitors ripple current?
i got lots of caps in my circuit.
will more then 1000 milliamps of ripple current, destroy 1 amp regulators, diodes etc?
only IF they are in series with the capacitor - very unlikely so no they will not see this current-ripple as the capacitor see's it, they will see some but due to the voltage ripple w.r.t. the load impedance