DOC: update roadmap
1.5-dev is closed, it will not get any more updates.
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Willy Tarreau
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154
ROADMAP
154
ROADMAP
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@ -1,8 +1,8 @@
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Medium-long term roadmap - 2014/05/10
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Medium-long term roadmap - 2014/06/19
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Legend: '+' = done, '-' = todo, '*' = done except doc
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1.5 (ETA 2013/12/31) :
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1.6 or later :
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- POST parameter extraction and size/speed measurement to use in ACLs
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- return-html code xxx [ file "xxx" | text "xxx" ] if <acl>
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@ -41,113 +41,6 @@ Legend: '+' = done, '-' = todo, '*' = done except doc
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- http-request track-sc* to avoid having the ugly "if !HTTP" in tcp-request
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DONE:
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* half-closed timeouts ?
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* add support for server-side unix sockets
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* server-side HTTP keepalive
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=> maybe with limitation to only reuse connections that don't depend
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on layer7 in a first time (just check the target).
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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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=> changed to <sample>[,<conv>]*
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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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=> maps
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* what to do with data after a POST and how to detect some data were
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received when responding ? In theory we should read everything because
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the TCP stack does not notify us that the FIN was acked. In practice,
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reading just before closing should be enough. Right now we simply read
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whatever comes after the POST.
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=> switch the connection to a "drain" state, where it monitors its
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output queue on each I/O and where it can be stolen if fds are
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missing.
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* tcp-request {connection|session} expect-proxy {L4|L5} if ...
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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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* 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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* http_req_first ACL
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* expirable cookies + "preserve"
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* ECV, LDAPv3 & MySQL checks
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* configurable check buffer size
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* stats + ON/OFF
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* halog: sort by URL
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* "PROXY" protocol
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* add support for client-side unix sockets
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* hash: rehash non-consistent hashes with chash() for more randomness.
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* add an error ID in captures to ease new error detection for scripts.
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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. => done differently with the
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target descriptors. The dummy server code exists in the "dummysrv" branch
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which will die since it does not make sense anymore.
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* ACL to report number of used entries in a table
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* automatically compute fullconn for backends : by default, set it to
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10% of the sum of the maxconn of all unique frontends which reference
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it via use_backend, default_backend or that are in the same listen.
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* count number of monitor requests on frontends, that's the only way
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to explain the possible huge difference between frontend and backend
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sessions.
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* assign a nice priority based on ACLs.
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* set-log-level if <acl> (front/back)
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* fix "PR--" flags when accessing stats
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* merged ACL/fetches
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* use_server ... if ...
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* ability to kill an arbitrary session from the command line. Put a "kill now"
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flag in every session which preempts any other processing and wake the
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session up.
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* add a last activity date for each server (req/resp) that will be
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displayed in the stats. It will be useful with soft stop.
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* compression : to be fixed
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* ACL feeding via the UNIX socket
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* lookup tables (eg: map IP to country)
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1.6 (will probably change anyway) :
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- wait on resource (time, mem, CPU, socket, buffers, server's conn, server's rate, ...)
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- bandwidth limits
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@ -174,43 +67,58 @@ DONE:
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to maintenance mode => requires a per-server session list and the change
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above.
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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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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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- 3 memory models : failsafe (prealloc), normal (current), optimal (alloc on
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demand)
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- implement support for event-triggerred epoll()
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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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- 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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- 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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- new keyword 'check' : check http xxx, check smtp xxx, check ssl-hello
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- initcwnd parameter for bind sockets : needed in kernel first
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- initcwnd parameter for bind sockets : needed in kernel first
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- have a callback function which would be called after a server is selected,
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for header post-processing. That would be mainly used to remove then add
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the server's name or cookie in a header so that the server knows it.
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- have a callback function which would be called after a server is selected,
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for header post-processing. That would be mainly used to remove then add
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the server's name or cookie in a header so that the server knows it.
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Unsorted :
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- outgoing log load-balancing (round-robin or hash among multiple servers)
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- internal socket for "server XXX frontend:name"
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- HTTP/2.0
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- DNS requests on health checks
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- XML inspection (content-switching for SOAP requests)
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- sync all stick-tables data, not just serverid.
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- request, session and user variables
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- random cookie generator
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- external checker
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- fastcgi to servers
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- hot config reload
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- RAM-based cache for small files
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- RHI - BGP
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- telnet/SSH cli
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- dynamic memory allocation
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- dynamic weights based on check response headers and traffic response time
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- various kernel-level acceleration (multi-accept, ssplice, epoll2...)
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- "show stats detail" with a different output format and encoding of quotes
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