open
read
doRead: abc|i:123;
123
write
updateTimestamp
close
Array
(
    [0] => Content-Type: text/plain; charset=utf-8
    [1] => Cache-Control: max-age=10800, private, must-revalidate
    [2] => Set-Cookie: sid=26o80nprk8u5qckal97g9j9307; path=/; secure; HttpOnly
)
shutdown