Fixing MQLRates

[Dark Ryd3r]

I am importing data from Websocket :

            MqlRates rates[1];
            ArrayResize(rates,1);
            rates[0].open = open;
            rates[0].high = high;
            rates[0].low  = low;
            rates[0].close= close;
            rates[0].time= time/1000;
            CustomRatesReplace(_Symbol,rates[0].time,rates[0].time,rates);
            ZeroMemory(rates);

all is working fine except the 2021.hcc file under bases> Custom > history folder is too big almost 1GB if system keep receiving data for 12 hours

I am using this code to fix hcc file size

 MqlRates rates[];
      int candlecount = iBars(_Symbol, PERIOD_M1);
      candlecount = candlecount>100000? 100000 : candlecount;
      if(candlecount == CopyRates(_Symbol, PERIOD_M1, 0, candlecount, rates)) {
         if(candlecount == CustomRatesDelete(_Symbol, rates[0].time, rates[candlecount-1].time)) {
            CustomRatesUpdate(_Symbol, rates);
         }
      }

this code immediately reduce size of hcc from 1GB  to 20MB

To prevent misuse of disk, I am looking for how can i fix code so hcc file always remains low size.

I appreciate and thank you for any help