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21475e3215
This new branch is based on 1.4.6, which 1.5-dev0 is 100% equivalent to. The roadmap has been updated.
100 lines
3.4 KiB
Plaintext
100 lines
3.4 KiB
Plaintext
Medium-long term roadmap - 2010/04/10
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Legend: '+' = done, '-' = todo, '*' = done except doc
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1.5 (ETA 2010/12/31) :
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- server-side HTTP keepalive
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- return-html code xxx [ file "xxx" | text "xxx" ] if <acl>
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- return-raw [ file "xxx" | text "xxx" ] if <acl>
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- add support for client-side and server-side unix sockets
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- try to remove srv==NULL internally and assign a dummy server to each backend
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for dispatch, http_proxy and transparent modes.
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- rename L4 acls as L6 ACLs when some content is involved
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- add new L4 ACL checks immediately after accept, before even allocating the
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buffers ("connection {accept|reject|delay|freeze} {if|unless}").
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- implement support for "connection freeze" after accept. A list of frozen
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connections should be maintained so that it is possible to recycle them
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when new file descriptors are required.
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- support for time-ordered priority queues with ability to add an offset
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based on request matching. Each session will have one ebtree node to be
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attached to whatever queue the session is waiting in.
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- assign a nice priority based on ACLs.
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- pattern extraction is needed for ACLs and stickiness. It would work like
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this :
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acl <name> <pattern> [-i] <values>...
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All ACL fetch method currently available would be transformed into pattern
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extraction methods. That way we could stick on hdr(x-forwarded-for) or use
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source 0.0.0.0 usesrc <pattern> (such as "hdr_ip(headername)"). Note that
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ACLs sometimes need iterative matching/extraction.
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- add support for complex pattern extraction rules :
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pattern = <pattern_term>
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| '{' pattern_expr '}'
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pattern_expr = <pattern_term> [ <transform> ... ]
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- support loading data sets from files
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+ present/not present (eg: netmasks)
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- pattern conversion per prefixes. Eg: convert src IP to country.
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- make new patterns available based on stickiness matching :
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- number of entries in table for the matched pattern
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- same after having increased the match counter
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- add support for concurrency match in tables
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- just like stickiness, but counted per session (or request), increased
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on first match and decreased at end of request or connection. This
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requires that the session has a list of matched terms that must be
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released at the end.
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1.6 (will probably change anyway) :
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- wait on resource (mem, socket, server's conn, server's rate, ...)
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- bandwidth limits
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- create internal services and make stats, CLI, etc... part of that.
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- use_server ... if ...
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- buddy servers to build defined lists of failovers. Detect loops during
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the config check.
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server XXX buddy YYY
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server YYY # may replace XXX when XXX fails
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- spare servers : servers which are used in LB only when a minimum farm
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weight threshold is not satisfied anymore. Useful for inter-site LB with
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local pref by default.
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Old, maybe obsolete points
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- clarify licence by adding a 'MODULE_LICENCE("GPL")' or something equivalent.
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- 3 memory models : failsafe (prealloc), normal (current), optimal (alloc on
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demand)
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- ability to assign a task priority based on L7 matching
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- implement support for event-triggerred epoll()
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- verify if it would be worth implementing an epoll_ctl_batch() for Linux
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- option minservers XXX : activates some spare servers when active servers
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are insufficient
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- new keyword 'check' : check http xxx, check smtp xxx, check ssl-hello
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