Unified Update Service

I currently add some update-checking abilities to my programs. It’s very hacked together and not very central. To overcome that, I think the best solution is the run a background application/service/daemon that handles the update information from across the internet, and then provide that information to applications.

Daemon Goals:

• Be very stable
• Quick
• Low memory usage

I intend on achieving a small memory footprint by using dlls (and .so’s on linux) that get loaded when an operation is needed. Such operations will be divided up into 3 segments. Client connections, database operations, and information retrieval from a central server. When any operation isn’t being use for a small amount of time (2 minutes lets say), free that memory and unload the modules therefore using a very small amount of memory (barring no leaks).

Client Goals:

• Be very stable
• Quick
• Don’t interfere with normal program usage
• Be able to use an alternate means of updating

I think providing a plugable means to run updates is a must. If plugin x isn’t available, don’t connect to the daemon, if y isn’t available, don’t use a more comprehensive HTTP method, and if nothing is present, fall back on a very simple TCP connection.

Here’s a sample (and simple) diagram:

On the Other Hand

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