How to implement ACID transactions on a custom key-value store

How to implement ACID transactions on a custom key-value store

By : abs0lve3ell
Date : November 18 2020, 01:01 AM
fixed the issue. Will look into that further This is just a rough idea but you basically need to implement a "Copy on Write" functionality wherein when you go to modify a file you would copy the file to a identical file name with a special extension, this would represent your working file you write your changes to and also represents your "lock". If someone detects that the "lock file" exists they can check the last write time to the lock file and if the last write is older than a pre-set timeout the lock can be assumed to be abandoned and delete the lock, if the last write is not older than the timeout access to the file is blocked.
When a client is done modifying the copied version of the file it renames the file back to the original "non locked" filename overwriting the unmodified original copy in a single atomic operation.
code :

Share : facebook icon twitter icon
How do ACID and database transactions work?

How do ACID and database transactions work?

By : user2307222
Date : March 29 2020, 07:55 AM
To fix this issue ACID is a set of properties that you would like to apply when modifying a database.
Atomicity Consistency Isolation Durability
Is an ACID complaint SQL database is still "ACID" even when not explicitly using transactions?

Is an ACID complaint SQL database is still "ACID" even when not explicitly using transactions?

By : Vitalii
Date : March 29 2020, 07:55 AM
wish help you to fix your issue The behaviour you are asking about does vary from one database to another.
With PostgreSQL and Microsoft SQL Server, if you don't use "begin transaction" ... "end transaction" then every statement is treated as a transaction. This behaviour is often described as "auto commit" and you can switch that on as an option in MySQL.
ACID transactions, durability

ACID transactions, durability

By : EddiePhoenix
Date : March 29 2020, 07:55 AM
will be helpful for those in need In practice, transactions are either committed or rolled back in their entirety if when a technology failure occurs.
Failures involving unpredicted halts of servers (due to catastrophic destruction, for example) often result in the transaction being rolled back (the data left in the state before the transaction began, not in some intermediate state).
Neo4J using REST best way to accomplish several transactions as one ACID transactions

Neo4J using REST best way to accomplish several transactions as one ACID transactions

By : Zheka Kraska
Date : March 29 2020, 07:55 AM
Any of those help Neo4j 2.0 is adding remote transactions via REST, but it is not stable yet. Beyond that, there is no transactional support via REST that I'm aware of. To the best of my knowledge, only the Java API provides any sort of transaction mechanism right now that will give you what you need.
How To Implement ACID Transactions in Loopback

How To Implement ACID Transactions in Loopback

By : Norma Chandler
Date : March 29 2020, 07:55 AM
This might help you I've managed to get a transaction working, but I don't know if this is the best way of doing it. I needed to check the "instance" because when the user is not found it does not return an error, but the instance is null. I did it using the built-in promises, because it would be really ugly using callbacks.
In the following example I had to find two users in order to update both of them. The transaction should succeed only if both values where modified. If one error occurred in the meantime, the transaction should be stopped (rolledback).
Related Posts Related Posts :
  • Why does C# also not allow empty conditions in while loops?
  • Unable to get a block of code into my regex match groups
  • What is difference between dbcontext.Add and dbcontext.AddObject
  • How do I update the file version number of C# DLL without recompiling?
  • Value for html control always null
  • HttpClient hangs when timeout is setting (Windows Phone)
  • Handle Multiple Form tag in asp.net page?
  • create word document with html content in c#
  • Confusion about Find And Replace
  • Format sms messages in Clickatell
  • Automated Function Overload
  • String to date in MS Access SQL statement gives type mismatch error
  • ShowDialog exiting on certain events
  • Is there a try Convert.ToInt32... avoiding exceptions
  • How to move wpf application into minimize tray at Window Start-up C#?
  • How to change display format of long variable?
  • How to use Addfields in MongoDB C# Aggregation Pipeline
  • MsTest TestCleanup method not called when an unhandled exception is thrown
  • missing last data when exporting gridview to excel
  • How to add array of objects to List in c#
  • Lambda Expression to order (sort) my list collection
  • Library for displaying music notation
  • How to compare two dictionaries in c# and get the output as True and False after validation
  • specify fields to be serialized with JSON
  • How do you obtain the content of a specific node using XmlDocument in C#?
  • How to ignore the first line in a csv file when you read the csv file in C#
  • c# - Problem calling public void from class
  • How to tell a class which objects it should create? Type vs. object confusion :(
  • Save CheckBox state to xml
  • WIX CAQuietExec NETSH Command Fails
  • Issues sending http put request every 60 seconds to RoR app
  • ConfigurationManager.ConnectionStrings.ConnectionString Issue
  • Real size WPF controls for printing
  • How to cancel properly?
  • C# String multiplication error
  • Using Solrnet and Assigning Attributes with Entity Framework Generated POCOs
  • Regex pattern for single backslash
  • TextBox: insert spaces for credit card number?
  • C# DLL loaded for exe-application is not found when launching similar DLL by rundll32.exe
  • Debug a Windows Service with WCF library
  • Open a file from an external assembly?
  • Servicestack RegistrationFeature Unable to bind request
  • Index was outside the bounds of the array confusion
  • Error in Xml to List code. The ':' character, hexadecimal value 0x3A, cannot be included in a name
  • I am trying to do a while loop with a string conditional statement in C#
  • C# 'Cannot access a disposed object. Object name: 'SslStream'.'
  • How to make Gecko use seperate CookieContainer per instance?
  • C# Advanced form "please wait"
  • Send and Receive data C# using network stream
  • How to discover that appsettings changed in C#?
  • Check what needs full trust
  • What is the execution order of an MVC Razor view/layout
  • Table designer (Entity Framework) is too resource intense
  • How to clean up an exception string so it can be displayed via Javascript Alert?
  • Configuring Amazon SES Feedback Notifications via Amazon SNS in ASP.NET MVC (C#)
  • C# api responce and request
  • Dynamodb putitem function not working properly
  • theme in windows phone(light or dark) using c#
  • Backup attached database file(.mdf) using c# and SQL Server
  • What is 'TextFile' and where it is uses in WPF project
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org