fidalgo

fidalgo

High Performance PostgreSQL for Rails: Using Advisory Locks (page 195)

@andatki

In this page, you mention:
The Transaction Pooling Mode for PgBouncer cannot be used with Advisory Locks
Can you expand a title further on this? PgBouncer is like a first resource when people run out of database connections, and now that it supports prepared statements people are much more inclined to continue to use it.
With the increase awareness of advisory locks and things like GoodJob background job processing, are we increasing the risk of problems?

In the table for features for PGBouncer we can find some information: PgBouncer features

Do you think that having a more detailed explanation on the risks and what we should do to ensure to remain compatible (using session pooling, basically)

Even after reading the Choosing A PgBouncer Pooling Mode in page 190 and when using GoodJob, being the transaction mode, the most common, the user can easily fall in the trap of choosing the most common method to later release it’s not supported.

First Post!

andatki

andatki

Author of High Performance PostgreSQL for Rails

Thanks @fidalgo. That’s a good idea to point out that possible surprise. As you noted, we can now use Prepared Statements with PgBouncer in the transaction pooling mode. But other “client features” aren’t supported, also as you noted, leaving only session mode which has less benefits. I agree it would nice to provide some warning and caution about that. I’ll follow up if I can get something included in time. Thank you!

Where Next?

Popular Pragmatic Bookshelf topics Top

brianokken
Many tasks_proj/tests directories exist in chapters 2, 3, 5 that have tests that use the custom markers smoke and get, which are not decl...
New
GilWright
Working through the steps (checking that the Info,plist matches exactly), run the demo game and what appears is grey but does not fill th...
New
mikecargal
Title: Hands-On Rust (Chapter 11: prefab) Just played a couple of amulet-less games. With a bit of debugging, I believe that your can_p...
New
raul
Hi Travis! Thank you for the cool book! :slight_smile: I made a list of issues and thought I could post them chapter by chapter. I’m rev...
New
joepstender
The generated iex result below should list products instead of product for the metadata. (page 67) iex> product = %Product{} %Pento....
New
rmurray10127
Title: Intuitive Python: docker run… denied error (page 2) Attempted to run the docker command in both CLI and Powershell PS C:\Users\r...
New
brian-m-ops
#book-python-testing-with-pytest-second-edition Hi. Thanks for writing the book. I am just learning so this might just of been an issue ...
New
curtosis
Running mix deps.get in the sensor_hub directory fails with the following error: ** (Mix) No SSH public keys found in ~/.ssh. An ssh aut...
New
nicoatridge
Hi, I have just acquired Michael Fazio’s “Kotlin and Android Development” to learn about game programming for Android. I have a game in p...
New
New

Other popular topics Top

AstonJ
If it’s a mechanical keyboard, which switches do you have? Would you recommend it? Why? What will your next keyboard be? Pics always w...
New
Exadra37
I am thinking in building or buy a desktop computer for programing, both professionally and on my free time, and my choice of OS is Linux...
New
AstonJ
poll poll Be sure to check out @Dusty’s article posted here: An Introduction to Alternative Keyboard Layouts It’s one of the best write-...
New
New
AstonJ
If you get Can't find emacs in your PATH when trying to install Doom Emacs on your Mac you… just… need to install Emacs first! :lol: bre...
New
PragmaticBookshelf
Build efficient applications that exploit the unique benefits of a pure functional language, learning from an engineer who uses Haskell t...
New
PragmaticBookshelf
Author Spotlight Rebecca Skinner @RebeccaSkinner Welcome to our latest author spotlight, where we sit down with Rebecca Skinner, auth...
New
husaindevelop
Inside our android webview app, we are trying to paste the copied content from another app eg (notes) using navigator.clipboard.readtext ...
New
CommunityNews
A Brief Review of the Minisforum V3 AMD Tablet. Update: I have created an awesome-minisforum-v3 GitHub repository to list information fo...
New
PragmaticBookshelf
Explore the power of Ash Framework by modeling and building the domain for a real-world web application. Rebecca Le @sevenseacat and ...
New

Sub Categories: