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Difference "CppCMS Roadmap" ver. 105 versus ver. 106

Content:

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## On Its Way
- C++11 support by default, cleanup of booster to use standard library where possible
- Python 3 and 2 support for templates compiler and unit testing.
## HTTP Server improvements - most required/urgent
- Implement HTTP/1.1
- Provide WebSockets support
## Add Support of multiple event loops
Today, asynchronous applications do not scale
well on multi-core systems.
Add required support of multiple event loops
so different asynchronous applications would
be able to use them.
## OpenAPI
What about making OpenAPI services with CppCMS?..
## HTTP Server improvements
- Implement HTTPS
- Implement Virtual Hosts support
## Cache Improvements
### Contention
When an entry is invalidated many requests
may try to generate it and create significant load.
Solution, delay "fetch" if some other fetching.
### Active Invalidation
Distributed Cache system implements L1/L2 cache
allowing a cache client to check if the data is
has is still up-to-date without reading it back.
However each access to cache still require TCP-ping-pong.
So instead active cache invalidation may be done: when
trigger is risen or new data is stored a sort of
a message that causes all clients to drop invalid
cache is broad-casted.
Need to be implemented.
### Object invalidation
Use cache to invalidate general object
### Enable O(1) invalidation and lazy collection
- Make triggers refcounted - and keep generation
- Invalidation options:
1. Triggers keep spliceable list of objects that moved to kill list and deleted on demand O(1) operation
2. Triggers do not have list of objects at all but rather have limited access to
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