Varnish Improvement Proposals - varnishcache/varnish-cache GitHub Wiki
A VIP is a document for hashing out the details of non-trivial ideas for improving Varnish.
The VIP procedure starts with a discussions on varnish-dev@.
As that discussions gels out, phk@ will decide if a a VIP page should be created to document, mock-up and record what the improvement will be, and how it will be implemented etc.
Open VIPs
VIP1: PRIV_* visibility and lifetime control
VIP6: What does pipe mean in Varnish5?
VIP7: Least connection director
VIP8: No pipe in builtin.vcl in V5
VIP9: Expand VCL object support
VIP9B: Extend vmod object scopes
VIP12: vmod polymorphism (for type conversions)
VIP15: Specifying source address for outgoing sockets
VIP20: Varnish ABI and packaging
VIP22: include backend connection in director lookup
VIP 23: Refactor VSL to support extracting structured data from "binary" log payloads
VIP 24: Hitpass turning into hitmiss after ttl
VIP 25: Inconsistent responses when VFP fails during streaming
VIP 27: Move some VCL variables to the catflap facility
VIP29: VCL labels and backend.list ( r option etc.)
VIP30: Plumbing: vcl_raw() and vcl_pipe()
VIP31: Backend connection queue
VIP32: VSL-API and Unset headers
VIP34: Conservative map usage in shared memory
On Hold VIPs
VIP 18: RST specification for code generation
VIP28: designated vmod object methods
Closed VIPs
VIP4: Restrict VMOD function call sites
VIP5: Remote test-run reporting facility
VIP10: Differentiate out "out of workspace" errors
VIP16: Retire parameters aliases
VIP 17: Enable Unix domain sockets for listen and backend addresses
VIP 19: Declare ENUM types in VCC for VMODs
VIP 26: limit private prefetch
VIP page structure
Individual VIP pages should follow this overall template:
"Synopsis" - One paragraph summing the proposal up
"Depends on" - (optional) other VIPs which must be completed before this is possible/makes sense
"Why?" - Explain why we need this, what is it we cannot do without it.
"How?" - Outline how this VIP can be implemented
(more to come as experience is gained)