Matching Specific Ad Based On Various Filters

Hi, I need a little help with someting I’d like to implement, but not sure how to do it.

I’m running eBay like classifieds site. There are a lot of filters on my site e.g. you can filter ads by price, by category, by city, by condition…
Let’s say we have this use case:

• User is able to filter ads on my site using filters
• Once he does it he can save those filters and subscribe to get push notification when someone submits an ad that matches those filters
• I save those filters...

Matching Specific Ad Based On Various Filters

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