Move changelog to separate file.
This commit is contained in:
Neil Booth
parent
9eee1c815d
commit
c1bf4eb792
232
README.rst
232
README.rst
@ -13,233 +13,7 @@ For a future network with bigger blocks.
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:Language: Python (>= 3.6)
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:Language: Python (>= 3.6)
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:Author: Neil Booth
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:Author: Neil Booth
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Getting Started
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Documentation
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===============
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=============
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See `docs/HOWTO.rst`_.
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See `readthedocs <https://electrumx.readthedocs.io/>`_.
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There is also an `installer`_ available that simplifies the installation on various Linux-based distributions.
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There is also an `Dockerfile`_ available .
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.. _installer: https://github.com/bauerj/electrumx-installer
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.. _Dockerfile: https://github.com/lukechilds/docker-electrumx
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Features
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========
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- Efficient, lightweight reimplementation of electrum-server
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- Fast synchronization of bitcoin mainnet from Genesis. Recent
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hardware should synchronize in well under 24 hours. The fastest
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time to height 448k (mid January 2017) reported is under 4h 30m. On
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the same hardware JElectrum would take around 4 days and
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electrum-server probably around 1 month.
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- The full current Electrum protocol is implemented.
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- Various configurable means of controlling resource consumption and
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handling denial of service attacks. These include maximum
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connection counts, subscription limits per-connection and across all
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connections, maximum response size, per-session bandwidth limits,
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and session timeouts.
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- Minimal resource usage once caught up and serving clients; tracking the
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transaction mempool appears to be the most expensive part.
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- Fully asynchronous processing of new blocks, mempool updates, and
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client requests. Busy clients should not noticeably impede other
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clients' requests and notifications, nor the processing of incoming
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blocks and mempool updates.
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- Daemon failover. More than one daemon can be specified, and
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ElectrumX will failover round-robin style if the current one fails
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for any reason.
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- Peer discovery protocol removes need for IRC
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- Coin abstraction makes compatible altcoin and testnet support easy.
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Implementation
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==============
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ElectrumX does not do any pruning or throwing away of history. I want
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to retain this property for as long as it is feasible, and it appears
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efficiently achievable for the forseeable future with plain Python.
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The following all play a part in making ElectrumX very efficient as a
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Python blockchain indexer:
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- aggressive caching and batching of DB writes
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- more compact and efficient representation of UTXOs, address index,
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and history. Electrum Server stores full transaction hash and
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height for each UTXO, and does the same in its pruned history. In
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contrast ElectrumX just stores the transaction number in the linear
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history of transactions. For at least another 5 years this
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transaction number will fit in a 4-byte integer, and when necessary
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expanding to 5 or 6 bytes is trivial. ElectrumX can determine block
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height from a simple binary search of tx counts stored on disk.
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ElectrumX stores historical transaction hashes in a linear array on
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disk.
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- placing static append-only metadata indexable by position on disk
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rather than in levelDB. It would be nice to do this for histories
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but I cannot think of a way.
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- avoiding unnecessary or redundant computations, such as converting
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address hashes to human-readable ASCII strings with expensive bignum
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arithmetic, and then back again.
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- better choice of Python data structures giving lower memory usage as
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well as faster traversal
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- leveraging asyncio for asynchronous prefetch of blocks to mostly
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eliminate CPU idling. As a Python program ElectrumX is unavoidably
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single-threaded in its essence; we must keep that CPU core busy.
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Python's ``asyncio`` means ElectrumX has no (direct) use for threads
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and associated complications.
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Roadmap
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=======
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- offloading more work of wallet synchronization to the client
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- supporting better client privacy
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- wallet server engine
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- new features such as possibly adding label server functionality
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- potentially move some functionality to C or C++
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ChangeLog
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=========
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IMPORTANT: version 1.2 changes script hash indexing in the database,
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so you will need to rebuild your databases from scratch. Running this
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version will refuse to open the DB and not corrupt it, so you can
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revert to 1.1.x if you wish. The initial synchronisation process
|
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should be around 10-15% faster than 1.1, owing to this change and
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Justin Arthur's optimisations from 1.1.1.
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Version 1.2.1
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-------------
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- remove IRC support. Most coins had empty IRC channels. Those that
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don't have peers populated.
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- use estimatesmartfee RPC call if available (SomberNight)
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- new/updated coins: Emercoin (Sergii Vakula), Bitcoin Gold (erasmospunk),
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Monacoin testnet (Wakiyama P), sibcoin (53r63rn4r), Komodo and Monaize
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(cipig), Hush (Duke Leto)
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- doc updates (fr3aker)
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- issues fixed: `#302`_
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Version 1.2
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-----------
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- separate P2PKH from P2PK entries in the history and UTXO databases.
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These were previously amalgamated by address as that is what
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electrum-server used to do. However Electrum didn't handle P2PK
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spends correctly and now the protocol admits subscriptions by script
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hash there is no need to have these merged any more.
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For Bitcoin (BitcoinSegwit/mainnet) you can download a leveldb database
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synced up to block 490153 using this bittorrent magnet link (~24GB):
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magnet:?xt=urn:btih:caa804f48a319b061be3884ac011656c27121a6f&dn=electrumx_1.2_btc_leveldb_490153
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Version 1.1.2
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-------------
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- PEER_DISCOVERY environment variable is now tri-state (fixes
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`#287`_). Please check your setting as its meaning has changed
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slightly.
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- fix listunspent protocol methods to remove in-mempool spends (fixes
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`#277`_).
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- improved environment variable handling
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- EMC2 update (cipig), Monacoin update (cryptocoin-junkey),
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Canada Ecoin (koad)
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- typo fixes, Bitcoin testnet peers updates (SomberNight)
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Version 1.1.1
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-------------
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- various refactorings, improvement of env var handling
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- update docs to match
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- various optimizations mainly affecting initial sync (Justin Arthur)
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- Dash fixes (cipig)
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- Add ALLOW_ROOT option (Luke Childs)
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- Add BitZeny support, update Monacoin (cryptocoin-junkey)
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Version 1.1
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-----------
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See the changelogs below for recent changes. The most important is
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that for mainnet bitcoin **NET** must now be *mainnet* and you must
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choose a **COIN** from *BitcoinCash* and *BitcoinSegwit*. Similarly
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for testnets. These coins will likely diverge further in future so
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it's best they become separate coins now.
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- no longer persist peers, rediscover on restart
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- onion peers only reported if can connect; hard-coded exception removed
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- small fix for blockchain.transaction.broadcast
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Version 1.1pre2
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---------------
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- peerdisc: handle protocol 1.1 server replies
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- issue `#251`_: fix protocol version reported in server.peers.subscribe
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- fix handling of failed transaction broadcast
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- fix typos (SomberNight)
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- doc and test updates
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- dash: return errors in JSON error field for protocol 1.1
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Version 1.1pre1
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---------------
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Many changes, mostly to prepare for support of Electrum protocol 1.1
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which the next Electrum client release will use.
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*NOTE*: the **COIN** environment variable is now mandatory, and if you
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were running for any bitcoin flavour (Cash, Segwit, mainnet or
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testnet) you will need to update your **COIN** and **NET** environment
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variable settings as the old ones will no longer work.
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- implement protocol version 1.1 and update protocol documentation
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- rework lib/coins.py for the various bitcoin flavours
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- show protocol version in "sessions" ElectrumX RPC call
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- permit **HOST** envvar to be a comma-separated list
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- daemon abstraction refactoring (erasmospunk)
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- permit alternative event loop policies (based on suggestion / work
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of JustinTArthur)
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- misc configuration updates (SubPar)
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- add Neblio support (neblioteam) and Bitbay (anoxxxy)
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- HOWTO.rst update for running on privileged port (EagleTM)
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- issues closed: exclude test dirs from installation (`#223`_).
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Version 1.0.17
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--------------
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- fix #227 introduced in 1.0.16
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Version 1.0.16
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--------------
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- updated server lists for post-fork. If you are on the Segwit chain
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you should have NET be "bitcoin-segwit", and if on the Bitcoin Cash chain
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continue to use "mainnet".
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- binding address fix for multi-homed machines (mmouse)
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- listen to IPv4 and IPv6 local interfaces
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- add Fujicoin (fujicoin), Crown (Extreemist), RegTest (RCasatta),
|
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Monacoin (cryptocoin-junkey)
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- bug fixes and updates (Kefkius, mmouse, thesamesam, cryptocoin-junkey,
|
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jtarthur)
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Version 1.0.15
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--------------
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- split server networks faster if a fork is detected
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- minor speedup
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- add Vertcoin support (erasmospunk)
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- update Faircoin (thokon00)
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**Neil Booth** kyuupichan@gmail.com https://github.com/kyuupichan
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1BWwXJH3q6PRsizBkSGm2Uw4Sz1urZ5sCj
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LKaFk4KkVpw9pYoUpbckQSKKgCVC4oj78b
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.. _#223: https://github.com/kyuupichan/electrumx/issues/223
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.. _#251: https://github.com/kyuupichan/electrumx/issues/251
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.. _#277: https://github.com/kyuupichan/electrumx/issues/277
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.. _#287: https://github.com/kyuupichan/electrumx/issues/287
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.. _#302: https://github.com/kyuupichan/electrumx/issues/287
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.. _docs/HOWTO.rst: https://github.com/kyuupichan/electrumx/blob/master/docs/HOWTO.rst
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.. _docs/ENVIRONMENT.rst: https://github.com/kyuupichan/electrumx/blob/master/docs/ENVIRONMENT.rst
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.. _docs/PROTOCOL.rst: https://github.com/kyuupichan/electrumx/blob/master/docs/PROTOCOL.rst
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142
docs/changelog.rst
Normal file
142
docs/changelog.rst
Normal file
@ -0,0 +1,142 @@
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|
ChangeLog
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||||||
|
=========
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||||||
|
|
||||||
|
IMPORTANT: version 1.2 changes script hash indexing in the database,
|
||||||
|
so you will need to rebuild your databases from scratch. Running this
|
||||||
|
version will refuse to open the DB and not corrupt it, so you can
|
||||||
|
revert to 1.1.x if you wish. The initial synchronisation process
|
||||||
|
should be around 10-15% faster than 1.1, owing to this change and
|
||||||
|
Justin Arthur's optimisations from 1.1.1.
|
||||||
|
|
||||||
|
Version 1.2.1
|
||||||
|
-------------
|
||||||
|
|
||||||
|
- remove IRC support. Most coins had empty IRC channels. Those that
|
||||||
|
don't have peers populated.
|
||||||
|
- use estimatesmartfee RPC call if available (SomberNight)
|
||||||
|
- new/updated coins: Emercoin (Sergii Vakula), Bitcoin Gold (erasmospunk),
|
||||||
|
Monacoin testnet (Wakiyama P), sibcoin (53r63rn4r), Komodo and Monaize
|
||||||
|
(cipig), Hush (Duke Leto)
|
||||||
|
- doc updates (fr3aker)
|
||||||
|
- issues fixed: `#302`_
|
||||||
|
|
||||||
|
Version 1.2
|
||||||
|
-----------
|
||||||
|
|
||||||
|
- separate P2PKH from P2PK entries in the history and UTXO databases.
|
||||||
|
These were previously amalgamated by address as that is what
|
||||||
|
electrum-server used to do. However Electrum didn't handle P2PK
|
||||||
|
spends correctly and now the protocol admits subscriptions by script
|
||||||
|
hash there is no need to have these merged any more.
|
||||||
|
|
||||||
|
For Bitcoin (BitcoinSegwit/mainnet) you can download a leveldb database
|
||||||
|
synced up to block 490153 using this bittorrent magnet
|
||||||
|
`link (~24GB) <magnet:?xt=urn:btih:caa804f48a319b061be3884ac011656c27121a6f&dn=electrumx_1.2_btc_leveldb_490153>`_.
|
||||||
|
|
||||||
|
Version 1.1.2
|
||||||
|
-------------
|
||||||
|
|
||||||
|
- PEER_DISCOVERY environment variable is now tri-state (fixes
|
||||||
|
`#287`_). Please check your setting as its meaning has changed
|
||||||
|
slightly.
|
||||||
|
- fix listunspent protocol methods to remove in-mempool spends (fixes
|
||||||
|
`#277`_).
|
||||||
|
- improved environment variable handling
|
||||||
|
- EMC2 update (cipig), Monacoin update (cryptocoin-junkey),
|
||||||
|
Canada Ecoin (koad)
|
||||||
|
- typo fixes, Bitcoin testnet peers updates (SomberNight)
|
||||||
|
|
||||||
|
Version 1.1.1
|
||||||
|
-------------
|
||||||
|
|
||||||
|
- various refactorings, improvement of env var handling
|
||||||
|
- update docs to match
|
||||||
|
- various optimizations mainly affecting initial sync (Justin Arthur)
|
||||||
|
- Dash fixes (cipig)
|
||||||
|
- Add ALLOW_ROOT option (Luke Childs)
|
||||||
|
- Add BitZeny support, update Monacoin (cryptocoin-junkey)
|
||||||
|
|
||||||
|
Version 1.1
|
||||||
|
-----------
|
||||||
|
|
||||||
|
See the changelogs below for recent changes. The most important is
|
||||||
|
that for mainnet bitcoin **NET** must now be *mainnet* and you must
|
||||||
|
choose a **COIN** from *BitcoinCash* and *BitcoinSegwit*. Similarly
|
||||||
|
for testnets. These coins will likely diverge further in future so
|
||||||
|
it's best they become separate coins now.
|
||||||
|
|
||||||
|
- no longer persist peers, rediscover on restart
|
||||||
|
- onion peers only reported if can connect; hard-coded exception removed
|
||||||
|
- small fix for blockchain.transaction.broadcast
|
||||||
|
|
||||||
|
Version 1.1pre2
|
||||||
|
---------------
|
||||||
|
|
||||||
|
- peerdisc: handle protocol 1.1 server replies
|
||||||
|
- issue `#251`_: fix protocol version reported in server.peers.subscribe
|
||||||
|
- fix handling of failed transaction broadcast
|
||||||
|
- fix typos (SomberNight)
|
||||||
|
- doc and test updates
|
||||||
|
- dash: return errors in JSON error field for protocol 1.1
|
||||||
|
|
||||||
|
Version 1.1pre1
|
||||||
|
---------------
|
||||||
|
|
||||||
|
Many changes, mostly to prepare for support of Electrum protocol 1.1
|
||||||
|
which the next Electrum client release will use.
|
||||||
|
|
||||||
|
*NOTE*: the **COIN** environment variable is now mandatory, and if you
|
||||||
|
were running for any bitcoin flavour (Cash, Segwit, mainnet or
|
||||||
|
testnet) you will need to update your **COIN** and **NET** environment
|
||||||
|
variable settings as the old ones will no longer work.
|
||||||
|
|
||||||
|
- implement protocol version 1.1 and update protocol documentation
|
||||||
|
- rework lib/coins.py for the various bitcoin flavours
|
||||||
|
- show protocol version in "sessions" ElectrumX RPC call
|
||||||
|
- permit **HOST** envvar to be a comma-separated list
|
||||||
|
- daemon abstraction refactoring (erasmospunk)
|
||||||
|
- permit alternative event loop policies (based on suggestion / work
|
||||||
|
of JustinTArthur)
|
||||||
|
- misc configuration updates (SubPar)
|
||||||
|
- add Neblio support (neblioteam) and Bitbay (anoxxxy)
|
||||||
|
- HOWTO.rst update for running on privileged port (EagleTM)
|
||||||
|
- issues closed: exclude test dirs from installation (`#223`_).
|
||||||
|
|
||||||
|
Version 1.0.17
|
||||||
|
--------------
|
||||||
|
|
||||||
|
- fix #227 introduced in 1.0.16
|
||||||
|
|
||||||
|
Version 1.0.16
|
||||||
|
--------------
|
||||||
|
|
||||||
|
- updated server lists for post-fork. If you are on the Segwit chain
|
||||||
|
you should have NET be "bitcoin-segwit", and if on the Bitcoin Cash chain
|
||||||
|
continue to use "mainnet".
|
||||||
|
- binding address fix for multi-homed machines (mmouse)
|
||||||
|
- listen to IPv4 and IPv6 local interfaces
|
||||||
|
- add Fujicoin (fujicoin), Crown (Extreemist), RegTest (RCasatta),
|
||||||
|
Monacoin (cryptocoin-junkey)
|
||||||
|
- bug fixes and updates (Kefkius, mmouse, thesamesam, cryptocoin-junkey,
|
||||||
|
jtarthur)
|
||||||
|
|
||||||
|
Version 1.0.15
|
||||||
|
--------------
|
||||||
|
|
||||||
|
- split server networks faster if a fork is detected
|
||||||
|
- minor speedup
|
||||||
|
- add Vertcoin support (erasmospunk)
|
||||||
|
- update Faircoin (thokon00)
|
||||||
|
|
||||||
|
|
||||||
|
**Neil Booth** kyuupichan@gmail.com https://github.com/kyuupichan
|
||||||
|
|
||||||
|
1BWwXJH3q6PRsizBkSGm2Uw4Sz1urZ5sCj
|
||||||
|
|
||||||
|
LKaFk4KkVpw9pYoUpbckQSKKgCVC4oj78b
|
||||||
|
|
||||||
|
.. _#223: https://github.com/kyuupichan/electrumx/issues/223
|
||||||
|
.. _#251: https://github.com/kyuupichan/electrumx/issues/251
|
||||||
|
.. _#277: https://github.com/kyuupichan/electrumx/issues/277
|
||||||
|
.. _#287: https://github.com/kyuupichan/electrumx/issues/287
|
||||||
|
.. _#302: https://github.com/kyuupichan/electrumx/issues/287
|
||||||
@ -24,3 +24,48 @@ Features
|
|||||||
for any reason.
|
for any reason.
|
||||||
- Peer discovery protocol removes need for IRC
|
- Peer discovery protocol removes need for IRC
|
||||||
- Coin abstraction makes compatible altcoin and testnet support easy.
|
- Coin abstraction makes compatible altcoin and testnet support easy.
|
||||||
|
|
||||||
|
Implementation
|
||||||
|
==============
|
||||||
|
|
||||||
|
ElectrumX does not do any pruning or throwing away of history. I want
|
||||||
|
to retain this property for as long as it is feasible, and it appears
|
||||||
|
efficiently achievable for the forseeable future with plain Python.
|
||||||
|
|
||||||
|
The following all play a part in making ElectrumX very efficient as a
|
||||||
|
Python blockchain indexer:
|
||||||
|
|
||||||
|
- aggressive caching and batching of DB writes
|
||||||
|
- more compact and efficient representation of UTXOs, address index,
|
||||||
|
and history. Electrum Server stores full transaction hash and
|
||||||
|
height for each UTXO, and does the same in its pruned history. In
|
||||||
|
contrast ElectrumX just stores the transaction number in the linear
|
||||||
|
history of transactions. For at least another 5 years this
|
||||||
|
transaction number will fit in a 4-byte integer, and when necessary
|
||||||
|
expanding to 5 or 6 bytes is trivial. ElectrumX can determine block
|
||||||
|
height from a simple binary search of tx counts stored on disk.
|
||||||
|
ElectrumX stores historical transaction hashes in a linear array on
|
||||||
|
disk.
|
||||||
|
- placing static append-only metadata indexable by position on disk
|
||||||
|
rather than in levelDB. It would be nice to do this for histories
|
||||||
|
but I cannot think of a way.
|
||||||
|
- avoiding unnecessary or redundant computations, such as converting
|
||||||
|
address hashes to human-readable ASCII strings with expensive bignum
|
||||||
|
arithmetic, and then back again.
|
||||||
|
- better choice of Python data structures giving lower memory usage as
|
||||||
|
well as faster traversal
|
||||||
|
- leveraging asyncio for asynchronous prefetch of blocks to mostly
|
||||||
|
eliminate CPU idling. As a Python program ElectrumX is unavoidably
|
||||||
|
single-threaded in its essence; we must keep that CPU core busy.
|
||||||
|
|
||||||
|
Python's :mod:`asyncio` means ElectrumX has no (direct) use for threads
|
||||||
|
and associated complications.
|
||||||
|
|
||||||
|
Roadmap
|
||||||
|
=======
|
||||||
|
|
||||||
|
- offloading more work of wallet synchronization to the client
|
||||||
|
- supporting better client privacy
|
||||||
|
- wallet server engine
|
||||||
|
- new features such as possibly adding label server functionality
|
||||||
|
- potentially move some functionality to C or C++
|
||||||
|
|||||||
@ -30,6 +30,7 @@ available .
|
|||||||
.. toctree::
|
.. toctree::
|
||||||
|
|
||||||
features
|
features
|
||||||
|
changelog
|
||||||
HOWTO
|
HOWTO
|
||||||
ENVIRONMENT
|
ENVIRONMENT
|
||||||
PROTOCOL
|
PROTOCOL
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user