End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

GDBM#cachesize=

gdbm.cachesize = size → size

static VALUE
fgdbm_set_cachesize(VALUE obj, VALUE val)
{
    struct dbmdata *dbmp;
    GDBM_FILE dbm;
    int optval;

    GetDBM2(obj, dbmp, dbm);
    optval = FIX2INT(val);
    if (gdbm_setopt(dbm, GDBM_CACHESIZE, &optval, sizeof(optval)) == -1) {
        rb_raise(rb_eGDBMError, "%s", gdbm_strerror(gdbm_errno));
    }
    return val;
}

Sets the size of the internal bucket cache to size.