473,396 Members | 1,975 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,396 software developers and data experts.

MROW Locking

Can anyone direct me to a good resource on how to do MROW Locking
efficiently in Python. The recipe at http://aspn.activestate.com/ASPN/Coo.../Recipe/413393
is actually quite inefficient (not sure if it is the code or MROW
itself).

I have a dictionary (a cache lets say or some sort of index) which
needs to be accessed by multiple threads. Most of the time its just
being read. Very rarely, I have to iterate over it (sometimes writing,
mostly reading), sometimes I have to update a single entry or multiple
entries (ala dict.update()). I'd like to know the best way to make
this happen (i.e. is MROW really what I am looking for or is there
something else?).

Is there a good way to do this using the in-built Lock and RLock
objects?
This project is part of a commercial database product.

Prateek

May 6 '07 #1
0 908

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

4
by: Michael Chermside | last post by:
Ype writes: > For the namespaces in Jython this 'Python internal thread safety' > is handled by the Java class: > > http://www.jython.org/docs/javadoc/org/python/core/PyStringMap.html > > which...
0
by: Matthew Scott | last post by:
After being introduced to the concept of MROW locking, I sought a general implementation of it in Python that implemented reentrant locks, had a simple interface, and was unit tested. I found...
16
by: Nid | last post by:
How do I do row-level locking on SQL Server? Thanks, Nid
10
by: McFly Racing | last post by:
Thread Locking In Static Methods I have the need for a Log Manger class that has static methods. Normally I would use the lock statement or a Monitor statement both of which take a...
15
by: z. f. | last post by:
Hi, i have an ASP.NET project that is using a (Class Library Project) VB.NET DLL. for some reason after running some pages on the web server, and trying to compile the Class Library DLL, it...
7
by: Shak | last post by:
Hi all, I'm trying to write a thread-safe async method to send a message of the form (type)(contents). My model is as follows: private void SendMessage(int type, string message) { //lets...
0
by: xpding | last post by:
Hello, I have a class MyEmbededList contains a generic dictionary, the value field is actually the MyEmbededList type as well. There is another class need to access and manipulate a list of...
0
by: Cindy Huyser | last post by:
I have an Access 2000 database behind a threaded Java application that that can have have concurrent access to the same table (but not the same record). The database is set up for shared access...
1
by: Paul H | last post by:
I have an Employees table with the following fields: EmployeeID SupervisorID Fred Bob Bob John Bob Mary Bill Bill I have created a self join in...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...
0
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.