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Tag: loss

Sleep – repeatable reading and second loss update problem

Using a repeatable read isolation level, updates may still be lost (the second lost update problem). For example. In the scenario where the isolation level is set to RR: 1) Transaction t1 reads da

October 12, 2021By Simo Hibernate loss, problem, read, Repeat, Second, sleep, UpdateLeave a Comment

After the application moves account A to iOS, the keychain access problem may be lost.

Our iOS application is transferred from account A to account B. Previously, we used the certificate created in account A and uploaded it on iTunes Connect using the certificate of account A.

October 11, 2021By Simo Wireless Access, account, application, China, IOS, key, loss, Mobile, possible, problem, program, stringsLeave a Comment

C # program Send POST Request Data + Lost Solution

The C# program always fails the verification when sending the RSA-encrypted password to the backend. I use wireshark to capture packets and find that the + signs in the password sent by POST have b

October 4, 2021By Simo C# C #, data, loss, middle, Number, POST, program, Request, Send, solutionLeave a Comment

Language – independent method of retrieving loss password

What is the best way to reset a user’s password when the password is hashed:

>Reset the password to a random string and use this character Send the string to their registered mail?
>Create a

October 3, 2021By Simo Search Engines independent, Language, loss, method, optimal, password, retrievalLeave a Comment

WPF – Continuous CANEXECUTE Call in WPF – Command

I am applying the MVVM pattern to a project. I have a UserControl which has a button which is bound to a command exposed by the ViewModel.
Since the button is visible, It will continue to call the

October 2, 2021By Simo Performance call, CANEXECUTE, Command, continuous, loss, performance, WPFLeave a Comment

Language-independent – Is it really performance loss when capturing abnormalities?

I asked a question about exceptions, and I am very annoyed by those who say that throwing is slow. I have asked in the past in How exceptions work behind the scenes, and I know that in normal code

October 2, 2021By Simo Performance abnormal, Capture, independent, Language, loss, performance, time, trueLeave a Comment

How many collections may be in MongoDB in MongoDB without loss?

I see that by default, MongoDB has 24,000 available collections with 16MB .ns files. If I increase it to 2GB (maximum), then I can Get 3,000,000 collections in it? Will there be a significant drop

October 2, 2021By Simo Performance how much, in, in the case of MongoDB, loss, performance, setLeave a Comment

Restoring the way the Seagate hard disk lost data

Seagate hard drive data recovery software
In today’s software market, there are many hard drive recovery tools, but their quality varies greatly. Once you choose the inferior Seagate hard drive re

September 25, 2021By Simo Network Hardware data, hard drive, Hi, Jie, loss, method, recoveryLeave a Comment

How to generate power consumption SSD metadata corruption? Can I minimize it?

Note: This is a follow-up question of Is there a way to protect SSD from corruption due to power loss?. I got good information there, but it basically focuses on three One aspect, “get a UPS”, “get

September 25, 2021By Simo Storage can, Damage, data, How to occur, loss, Meta, minimize, power consumption, SSDLeave a Comment

IPHONE – Do you have any performance loss when you call UIGRAPHICSGETCURRENTCONTEXT?

I am building a UIView with a custom drawRect function. This is a fairly complex view that requires drawing many different items. I basically break it down into each need to be drawn A function of

September 23, 2021By Simo iPhone Any, call, iPhone, loss, performance, repetition, time, uigraphicsgetcurrentcontext, whetherLeave a Comment
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