In any case, Facebook is as yet the biggest online networking system on the planet. Influencing its calculation to work for you is critical to an effective Facebook promoting technique. However, this post is about letting out Facebook Secrets kept from users on the platform.
Part of Facebook user’s challenge is the privacy challenge, here is why – Facebook gets you to share information that you might not otherwise share, and then they make it publicly available. Since they are in the business of monetizing information about us for advertising purposes, this amounts to tricking their users into giving advertisers information about themselves. This is why Facebook is different from other social media because the user always assumes that their activity is not public.
In this post, I will share a few technical “secrets” of Facebook that have been kept secret for years.
#1: Facebook Data Center
Facebook currently has six data centers around the globe. It all started with Mark’s personal computer, grew to a garage in Bay Area, and then to the first data center in Prineville, Oregon in 2010
Facebook data centers are more energy-efficient than your average data centers. In fact, energy is the biggest challenge for Facebook data centers, not money or other resources
Facebook does not use air conditioning for data centers, but natural air to keep its servers cool. This is done by filtering the air coming in and passing it through water sprinkled rooms to cool it down.
#2: Facebook User data Storage
Facebook has three copies of all your data. Thus, a RAID type mechanism can be thought of to be in place. This ensures that even if one (or two) data center goes down, your data is not lost.
Your old data is saved on disks (imagine CDs/DVDs). Suppose you have a huge room full of DVDs, having all your old High School and Prom photos from 2011. This room has a lot of robots too. Whenever you request for an old photo on Facebook, the scheduling algorithm in place instructs the nearest robot to go and fetch your DVD and play it, and the photograph is then retrieved.
Saving old data on such disks is very cost-efficient, as they are hardly used and keeping them in the active memory is a wastage of resources. You might wonder – how “old” a photograph needs to be, to be on the DVD? Well, that depends upon some algorithm.
#3: Facebook App and Algorithm Upgrade
Facebook performs weekly upgrades (like every Tuesday or so, if I remember correctly).
#4: Data Center Durability Test
Facebook tests the durability of its data centers by switching off an entire data center at a time, and seeing how the traffic around the globe behaves.
All the data must remain available at all times, and the users should not be able to differentiate this time from a normal Facebook browsing session.
This is done so as to safeguard against any natural calamity such as Earthquake, Tsunami, etc. (Because well, where will you update your status if Facebook isn’t working during a Tsunami?).