English equivalent of Russian "по кд" meaning "used repeatedly and as soon as possible"

There's a Russian gaming phrase "по кд" which means "fired/activated/used repeatedly and as soon as possible after the cooldown time".
The example of it being used in World of Tanks - "Зашёл к нему в спину и начал разваливать по кд", which roughly translates as "Flanked him and started damaging with all the DPS available".

The phrase mainly used in gaming, but it may be used in other domains, for example, programming - "Начал слать запросы по кд", which translates as "Started sending requests with a minimum possible downtime (be it receiver or sender restrictions, depends on the context)."

Is there an English equivalent for this Russian phrase?

I tried to use the literal slang translation, on/at cooldown, but it rather means "the thing is not ready (it is on cooldown)".
Another option, fire at will, roughly means "fire when ready", but it barely concerns the weapon itself.

So, is there an English phrase or idiom that means "по кд"?

From what I understand, your expression (по кд) is a gaming term, so the word you are looking for is almost certainly “spam”:

Spamming, in the context of video games, refers to the repeated use of the same item or action. For example, "grenade spamming" is the act of a player throwing many grenades in succession into an area. In fighting games, one form of spamming would be to execute the same offensive maneuver or combo so many times in succession that one's opponent does not receive a chance to escape the series of blows.

Usually this is said of actions that have a short cool down (see also button mashing), but it is also used for moves in turn based games, like Pokémon:

[S]mart players will have planned ahead and will know how to avoid overusing the move [Protect]… which, ironically, will allow them to spam it against other players who might not be able to catch a break in between bouts of unbreakable Protect and swift attacks.

Spam is used as both a verb and a noun (and spamming is also a noun/gerund):

While the game [Super Smash Bros.] discourages spamming with stale-move negation, the point of spam is to throw out many attacks to the point where the reduced damage can be made up simply by using the move twice as much

Additionally, spam is used in programming to describe a system that produces output as fast as it can, in particular when it does it enough that it puts strain on (or even takes down) a system that is receiving its output:

How to Limit web requests per second to avoid spamming and denial of service