Question about server delay & tick data

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I have two questions here, hoping MetaQuotes knowhows can help.

1. Is that true that all ticks were recorded and stored in history database sequencially? Since I have found that simulated transactions using tick data produce different result from being tested online.

2. Is there any kind of must-have server delay like 3 seconds, upon receiving an 'send-order' request? Since there is a cancel button lasting for some seconds on the trading window when I send the order to the server.

Thanks in advance.
 
Ticks are not recorded. They are accumulated to bars data.

You can cancel order until broker has taken it from queue to process.
 
Ticks are not recorded. They are accumulated to bars data.

You can cancel order until broker has taken it from queue to process.


Thank you, Slawa,
Still the 2nd question, is it true that there remains serval seconds for the server's fetching request from queue besides network lag, since the tester never shows any delay upon trading requests.
 
tester works without delays
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