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More Photo-Taking Tips   
Get extra memory cards
If more than one person will be using the same camera buy a separate memory card for each person; this way, everyone can keep their photos separate, and you don’t run the risk of deleting someone else’s pictures.  
Memory cards for video
If you plan on taking a lot of video, it would be a good idea to use a memory card with a good amount of memory (at least 2GB) with a high write speed. With this being said most digital cameras do an average job of capturing video, but I would suggest getting a camcorder if video is a priority to you.
Pet Photography
When photographing pets, I would suggest using as much natural light as possible. To avoid red/green eye reflection I would suggest not using a flash or at least using an off camera lighting source. Get down to the pets level when capturing your image (would you get onto a ladder to take a portrait of a person).
Lens flare
To eliminate lens flare, use a lens hood on your camera or curve your hand around the outside of the lens.  If you want to read a more detailed post about lens flare you could click here.
Magic hour
The best natural light is the light right after sunrise and right before sunset, and this light typically lasts for about an hour. Magic hour is when the majority of professional natural light photographs are taken, and you will be very surprised how much better your images look when taken during Magic hour. When photographing sunsets don’t use a flash and mount your camera to a tripod. 
Shooting through glass
When shooting objects through glass, don’t use a flash and use a polarizing lens filter if your camera is a DSLR. I would also suggest switching your camera to manual focus (if your camera has this option) since the autofocus system of your camera could easily be fooled into focusing on the glass (especially if the glass is dirty) and not your subject.
More Printing Tips  
Printer settings
Most printers allow you to change its setup depending on what type of output you are going to be printing too, and what type of quality you want. I would suggest setting your printer to Photo Paper and the best quality setting before printing your photos.
Photo paper
Not all photo papers are created equal! I would suggest investing in a high quality photo paper before printing your images.
Photo ink
I would also suggest making sure you are using photo-quality inks. You will be astonished by how much better your prints look when printed with high quality photo inks.
Archival
Lastly I would make sure that the paper you are using is archival if you want your images to last your lifetime. I would also suggest always handling your prints by the edges since the oils from a person’s fingers can cause your images to fade and discolor over time. If your prints are intended to be framed or put in an album I would suggest getting a few pairs of white cotton gloves which can be purchased at most art stores.
Allan|Senior Social Media Specialist | Best Buy® Corporate
 Private Message

Answer 1

Anton
I guess the assumption I am making is that a service object performing
database operations is primarily composed of SQL statements. Thus, being
locked for the duration of the SQL is the operational equivalent of being
locked for the duration of the message. Would anyone else like to comment
on this? I would love to get this clarified for everyone.
Perhaps a more complelling reason for having server side transactions would
be to reduce message traffic. A client-side transaction interacting with
services implies multiple messages and replies going back and forth across
the network. While in a server side transaction it is more likely that the
transaction would complete within one process or perhaps multiple processes
on the same node. Regardless, if the message to the server were launched as
independent task then the client wouldn't be left waiting for the server
transaction to complete.
Eric
At 05:44 5/09/96 +-200, you wrote:
>
Hi Eric,
This is quite interesting. I was under the impression that the same happensfor server-side transactions, i.e. the DBSession is locked, because they are
single threaded, until the transaction completes, but a test showed that its
only locked for the duration of the SQL statement ! Does this correspond
with your experience ?
Regards.
Anton.
[snip]
"Client-side" transactions which involve database services cause the service
to be busy until the client operations are complete. In the case of
services which access the database this can have significant performance
implications. If a replicated copy of a database services is tied up in a
client-side transaction then it is no longer available
[snip]