add roadmap.md

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

roadmap.md

+# go-ipfs Q2 roadmap
+Note: no specific order is implied in this list
+
+- [ ] fix random test failures
+  - check issues for label 'test_failure'
+- [ ] Improve memory usage 
+  - [ ] Goal: ipfs doesnt run out of memory on mars for 1 month
+  - [ ] identify where most memory usage comes from
+  - [ ] find and fix leaks
+  - [ ] add more IPFS_LOW_MEM knobs
+    - [ ] dht query parallelism
+	- [ ] libp2p dial concurrency
+- [ ] unixfs sharding 
+  - [ ] revive old branch for this
+- [ ] go-iprs
+  - [ ] ipld?
+- [ ] gateway code in its own repo
+  - [ ] move ipfs/go-ipfs/commands to ipfs/commands
+  - [ ] move ipfs/go-ipfs/core/corehttp to ipfs/gateway
+  - [ ] vendor all back in with gx
+- [ ] fix progress bars
+  - [ ] no negative infinity! (before total size is computed)
+  - [ ] 'ipfs get' progress bar working
+- [ ] Reduce idle bandwidth usage 
+  - [ ] Goal: idle < 100kbps
+    - [ ] measure current idle BW loads to make sure this is reasonable
+  - [ ] investigate why dht is so chatty
+    - watch ipfs log tail
+  - [ ] make fewer calls to findpeer and findprovs
+    - [ ] identify where all these calls are made
+  - [ ] fix 'ipfs stats bw' discrepancy
+  - [ ] have test (using mocknet?) that tests bandwidth usage
+- [ ] Make bitswap waste less bandwidth
+  - [ ] Goal: 50% reduction in duplicate block sends
+    - [ ] Test to measure this
+  - [ ] reintroduce pluggable strategy
+- [ ] Fix Providers Problem 
+  - [ ] Goal: 10x bandwidth reduction from providing
+  - [ ] provide-many redo
+- [ ] Reduce bitswap RTT 
+  - [ ] decide on pathing language
+- [ ] Improve Disk performance 
+  - [ ] Goal: 1TB repo working nicely
+  - [ ] Goal: 2x improvement in 'ipfs-whatever' ops/s
+  - [ ] large repo perf #2405
+  - [ ] investigate flatfs calls
+    - [ ] reduce number of useless calls
+  - [ ] dagservice lru caching
+    - [ ] configurable size
+  - [ ] blockstore 'has block' bloom filter cache
+  - [ ] improve query perf
+  - [ ] different datastore backends
+    - [ ] datastore config PR
+	- [ ] introduce sql-datastore
+- [ ] NAT Traversal (go-ipfs side)
+  - [ ] DHT FindPeers only returns first result
+- Misc Issues (great place to start contibuting!)
+  - [ ] user friendly dht output #2494
+  - [ ] config file validations #2491
+  - [ ] object patch error bug #2473
+  - [ ] 'hash only' for ipfs files stat #2461
+  - [ ] ipfs repo fsck #2457
+  - [ ] command to list all logging subsystems #2434
+  - [ ] offline mode for daemon #2393
+  - [ ] fix dial filters for ipv6 #2329
+  - [ ] 'ipfs object diff'
+    - using code from merkledag/utils/diff.go