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collections/problems/internet_infra/cdn_issues.md

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+
+
+## high CDN cost = Content Delivery
+
+- CDN's cost between 20 and 60 on major CDN's from Amazon, Google, ..., after negotiation and willingness to park lots of money and commit per month it mught be certain discount.
+- Other specialized CDN's can be around 10 per TB if services from e.g. Europe or US, smaller CDN's are much more expensive.
+- Managing these CDN's is expensive and not easy job.
+
+>> this means to service 10m people it would cost about 1 to 2m USD per month just for CDN alone.

collections/problems/internet_infra/cdn_pricing_amazon.md

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+# CDN pricing Amazon
+
+Remark no fees included for HTTPS requests, but should be ok for volume we are talking about, if app is made in right way.
+
+## US
+
+![](img/amz_us.png)
+
+= 28 USD per TB in US
+
+## EUR
+
+![](img/amz_eur.png)
+
+## MIDDLE EAST
+
+![](img/amz_middleeast.png)
+
+= 56 USD per TB
+
+## AFRICA
+
+![](img/amz_sa.png)
+
+= 56 USD per TB
+
+## Discounts
+
+- discounts can be negotiated but required serious amounts of pre-financing
+
+
+

collections/problems/internet_infra/cdn_pricing_google.md

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+# CDN pricing Google
+
+Remark no fees included for HTTPS requests, but should be ok for volume we are talking about, if app is made in right way.
+
+![](img/google_1.png)
+
+![](img/google2.png)
+
+https://cloud.google.com/cdn/pricing
+

collections/problems/internet_infra/cloud_issues.md

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+
+
+## high CDN cost = Content Delivery
+
+- CDN's cost between 20 and 60 on major CDN's from Amazon, Google, ..., after negotiation and willingness to park lots of money and commit per month it mught be certain discount.
+- Other specialized CDN's can be around 10 per TB if services from e.g. Europe or US, smaller CDN's are much more expensive.
+- Managing these CDN's is expensive and not easy job.
+
+>> this means to service 10m people it would cost about 1 to 2m USD per month just for CDN alone.
+
+## High cost of operations
+
+- cloud servers
+- managing those servers, what if mistakes are made
+
+## Ability to be shut down on the public cloud
+
+- its highly probable that within months there would be attempts to shut down the CDN's or often it happens more softly (give bad service and make your product look bad).
+
+## apps typically not ready to scale
+
+- ...
+- there are optimizations which can be done e.g. better indexing, better queries, more optimization strategies e.g. using redis
+- more knowledge is required to optimize the app
+
+## Ability to shutdown the mobile apps
+
+- google/apple might chose to shutdown apps
+- not easy to know how fast this will go, it might just be overnight
+
+## GDPR
+
+- are very annoying constraints in e.g. Europe, need to be careful to comply
+
+## Legal potential trouble
+
+- its important to have good terms & conditions and think which legal entity will be the counterpart of the T&C
+- there will be legal requirements like how to shutdown / recognize bad content
+
+## Redundancy / Uptime
+
+- is the site redundant, can data be lost?
+- what happens if a datacenter goes down?
+- or what happens if a DB server crashes?
+- what happens if e.g. DB gets corrupted?
+- how to make sure people always deserve the service they need
+- if it kind of works now, will  it work if 10x more people?
+- is everything monitored?
+- if an issue is detected are there people available 24h/day 7/7 to fix 
+- do the people who will fix have the right knowledge, where is that knowledge stored
+- is the monitoring system itself monitored, very often monitoring by itself will stop working
+
+## Performance
+
+- how to see performance is not good enough for customers
+- how to make sure we can easily fix it, can be region specific
+- how to relocate services?
+
+## protect against human error
+
+- mistakes are and will be made this might have huge impact on uptime and if not careful loose data
+- truck factor: what happens if someone goes away? can org easily take over and continue
+- level of automation & documentation?
+- how is version control done
+
+
+