seconds_since_boot
ttl = item->h.expiry_time - seconds_since_boot();
key.h.expiry_time = ttl + seconds_since_boot();
|| (*item)->h.expiry_time < seconds_since_boot()
if (exp.h.expiry_time < seconds_since_boot())
if (h->expiry_time < seconds_since_boot())
cd->last_close = seconds_since_boot();
if (detail->last_close < seconds_since_boot() - 30)
now = seconds_since_boot();
time64_t now = seconds_since_boot();
cache_fresh_locked(h, seconds_since_boot()+CACHE_NEW_EXPIRY,
age = seconds_since_boot() - h->last_refresh;
if (current_detail->nextcheck > seconds_since_boot())
current_detail->nextcheck = seconds_since_boot()+30*60;
time64_t now = seconds_since_boot();