230 Commits (abe392c947a7ccd8bf86a2d1511d632bbf3fd613)

Author	SHA1	Message	Date
saneery	8b06da3ccc	Add env var to manage refreshing period of average block time	5 years ago
Ayrat Badykov	eff839f1c4	add default evm version to smart contract verification	5 years ago
slightlycyborg	49dde3e239	Enbl historians in config.exs, disbl in test.exs; add to Application.ex	5 years ago
pasqu4le	da775b07b7	Group Explorer caches ... Problem: a bunch of different caches are under the Explorer.Chain namespaces, cluttering the codebase Solution: create a subdirectory and collect them all under the Explorer.Chain.Cache namespace	5 years ago
Ayrat Badykov	0b17f71ad7	fix name for xDai source	5 years ago
Ayrat Badykov	39f19401c3	add healthy block period checking query	5 years ago
Ayrat Badykov	9c33fe7179	allow to exclude uncles from average block time calculation	6 years ago
zachdaniel	4a63b978fd	feat: calculate RSK market cap	6 years ago
Ayrat Badykov	43f88e364b	use fetched net version in rsk checksum	6 years ago
Ayrat Badykov	3f3705c40e	add env vars for config	6 years ago
maxgrapps	5892fa6de6	content issues, test runned	6 years ago
Victor Baranov	f9d4480a77	add test for not trimmed evm versions input	6 years ago
Victor Baranov	aa9c2c22dd	Process reviewers comments	6 years ago
Victor Baranov	813b0d80ae	ALLOWED_EVM_VERIONS ENV VAR	6 years ago
Ayrat Badykov	390bb24d64	fix tests	6 years ago
saneery	57f924f440	edit config	6 years ago
saneery	7c9fe671a4	fetching staking epoch info	6 years ago
saneery	f46730c999	format	6 years ago
Ayrat Badykov	be1623b07e	fix System.get_env("BLOCK_COUNT_CACHE_TTL") type	6 years ago
saneery	7aafc8914f	fix test	6 years ago
Victor Baranov	df2228e7ae	Fix mix format test	6 years ago
saneery	7bf6759646	add cache for block counter	6 years ago
Ayrat Badykov	da2c79de7c	make coinmarketcap's number of pages configurable	6 years ago
saneery	5acda9df98	add staking pools importer	6 years ago
zachdaniel	8c1bb01fb1	feat: Add RSK support	6 years ago
Ayrat Badykov	02f3d922fe	use seconds	6 years ago
Ayrat Badykov	6d21e8529e	fix converting to integer	6 years ago
Ayrat Badykov	dd2dbbfddb	allow setting update interval for addresses with balances counter	6 years ago
Ayrat Badykov	245a19121f	replace source_module	6 years ago
zachdaniel	b02383a80b	feat: store average block time in a genserver	6 years ago
Luke Imhoff	8ffbe6418d	Use COUNT(*) of current_token_balances to eliminate TokenHoldersCounter ... `TokenHolderCounter` was created 20 days before the current_token_balances table and wasn't redesigned to make use of `current_token_balances`. With `current_token_balances` in place, the problematic query over `token_balances` that necessitated `TokenHoldersCounter` can use `current_token_balances`. Using `current_token_balances` with `COUNT(*)` is when tested on eth60-test, the new query for `Explorer.Chain.count_token_holders_from_token_hash/1` still took 11 seconds. ``` sql> SELECT COUNT(*) FROM address_current_token_balances WHERE token_contract_address_hash = decode('f230b790e05390fc8295f4d3f60332c93bed42e2', 'hex') AND address_hash != decode('0000000000000000000000000000000000000000', 'hex') AND value > 0 [2019-01-02 08:04:26] 1 row retrieved starting from 1 in 11 s 554 ms (execution: 11 s 463 ms, fetching: 91 ms) ``` Using `EXPLAIN`, it should this was using a full sequential scan of table, so like in the other `COUNT(*)` optimizations PRs, I added an index to enable an index scan. Running the migration to add the index took only 1 minute on eth60-test: ``` 2019-01-02T08:40:16.220 application=ecto_sql [info] == Running 20190102141900 Explorer.Repo.Migrations.IndexCurrentTokenHolders.change/0 forward 2019-01-02T08:40:16.220 application=ecto_sql [info] create index address_current_token_balances_token_contract_address_hash_index 2019-01-02T08:41:13.746 application=ecto_sql [info] == Migrated 20190102141900 in 57.5s ``` After the migration ran, Index Scan was enabled and the query took only 837ms. ``` sql> SELECT COUNT(*) FROM address_current_token_balances WHERE token_contract_address_hash = decode('f230b790e05390fc8295f4d3f60332c93bed42e2', 'hex') AND address_hash != decode('0000000000000000000000000000000000000000', 'hex') AND value > 0 [2019-01-02 08:42:44] 1 row retrieved starting from 1 in 866 ms (execution: 837 ms, fetching: 29 ms) ```	6 years ago
fvictorio	616658adbf	Show token price in USD	6 years ago
Luke Imhoff	903d322553	Use index and COUNT(*) for address_to_validation_count ... BlockValidationCounter is not needed once the query is switched to `COUNT(*)` and an index is added for `blocks.miner_hash`. Creating the index on eth60-test took only 12 seconds. ``` 2018-12-21T08:32:46.375 application=ecto_sql [info] == Running 20181221143000 Explorer.Repo.Migrations.CreateBlocksMinerHashIndex.change/0 forward 2018-12-21T08:32:46.375 application=ecto_sql [info] create index blocks_miner_hash_index 2018-12-21T08:32:59.211 application=ecto_sql [info] == Migrated 20181221143000 in 12.8s ``` Before the index both `COUNT(*)` and `COUNT(hash)` (the old usage before 76fc8e0377 in 92f99cac22) take > 800ms, which would have a noticable impact on the UI. ``` sql> SELECT COUNT(*) FROM blocks WHERE blocks.miner_hash = ( SELECT blocks.miner_hash FROM blocks LIMIT 1 ) [2018-12-21 08:27:43] 1 row retrieved starting from 1 in 906 ms (execution: 889 ms, fetching: 17 ms) sql> SELECT COUNT(hash) FROM blocks WHERE blocks.miner_hash = ( SELECT blocks.miner_hash FROM blocks LIMIT 1 ) [2018-12-21 08:28:04] 1 row retrieved starting from 1 in 819 ms (execution: 811 ms, fetching: 8 ms) ``` After the index both queries benefited because `COUNT(hash)` was able to use Bitmap Index Scan, but `COUNT(*)` was much better using a normal Index Scan: ``` sql> SELECT COUNT(hash) FROM blocks WHERE blocks.miner_hash = ( SELECT blocks.miner_hash FROM blocks LIMIT 1 ) [2018-12-21 08:33:43] 1 row retrieved starting from 1 in 776 ms (execution: 768 ms, fetching: 8 ms) sql> SELECT COUNT(*) FROM blocks WHERE blocks.miner_hash = ( SELECT blocks.miner_hash FROM blocks LIMIT 1 ) [2018-12-21 08:33:55] 1 row retrieved starting from 1 in 130 ms (execution: 120 ms, fetching: 10 ms) ``` The `SELECT` to get a miner_hash takes 54ms alone, so the `COUNT(*)` takes ~70ms, but EXPLAINs take just as long so ~50ms is my latency to eth60-test, meaning the `SELECT COUNT(*)` takes about 20ms plus latency.	6 years ago
Luke Imhoff	f67241cfc0	Use COUNT(*) for count_token_transfers_from_token_hash ... By using `COUNT(*)` instead of `COUNT(column)`, Postgres optimizes the count to use the row count recorded in the index. The ETS counter appeared necessary because in 95de1ebcb0, `COUNT(id)` was being used (95de1ebcb0/apps/explorer/lib/explorer/chain/token_transfer.ex (L138)), which seems reasonable in Ecto as you need some column to count, but in Postgres, it is more efficient to count everything with `*` as it implies "count rows". `COUNT(column)` requires Postgres check if any of the values are `NULL` and it does not optimize the query even if the column is `NOT NULL` in most cases like when the `id` was used. Testing on eth60-test database, `COUNT(*)` took 62ms while `COUNT(column)` (in this case `amount` since the table no longer has `id) took 16s demonstrating the vast speed improvement of `*` counting. ``` sql> SELECT COUNT(*) FROM token_transfers WHERE token_contract_address_hash = ( SELECT token_contract_address_hash FROM token_transfers LIMIT 1) [2018-12-21 07:51:02] 1 row retrieved starting from 1 in 70 ms (execution: 62 ms, fetching: 8 ms) sql> SELECT COUNT(amount) FROM token_transfers WHERE token_contract_address_hash = ( SELECT token_contract_address_hash FROM token_transfers LIMIT 1) [2018-12-21 07:51:43] 1 row retrieved starting from 1 in 16 s 862 ms (execution: 16 s 855 ms, fetching: 7 ms) ```	6 years ago
Luke Imhoff	81179f9459	Use :timer functions to make timeout values clearer	6 years ago
Luke Imhoff	3c0adace16	Include import_id and transaction_id in logger metadata ... When `import_id` and `transaction_id` was added in Logger calls, they were not added to the metadata allowed to be shown and so weren't appearing in the logs.	6 years ago
Gustavo Santos Ferreira	f2cbf37200	genserver that executes validator data imports every 24 hours	6 years ago
Gustavo Santos Ferreira	7549b8f8c8	prepare configs and new dependencies for the retriever	6 years ago
Luke Imhoff	ea58dad12b	Update to Ecto 3.0	6 years ago
Luke Imhoff	65197f5913	Add shrunk to metadata ... Allow separating shrunk vs unshrunk to monitor how often shrinking occurs.	6 years ago
Luke Imhoff	2569d2595e	Move missing_block_range_count and missing_block_count out of prose ... Being in metadata will allow it to be graphed by tools.	6 years ago
Luke Imhoff	1af8f89001	Move step out of prose and into metadata	6 years ago
Luke Imhoff	ac35c4680f	Move error_count out of prose and into metadata ... Having count and error_count in the metadata would allow us to graph one vs the other to see how often we achieve partial retries vs full retries.	6 years ago
Luke Imhoff	63e646a5ff	Move count out of prose and into metadata ... Record the number of things being fetched in metadata instead of in text so that the count can be graphed.	6 years ago
Luke Imhoff	2010e90a71	Move block range out of prose and into metadata ... The catchup block range `first_block_number..last_block_number` will set `Logger.metadata(first_block_number: first_block_number, last_block_number: last_block_number)` for errors in `BoundIntervalSupervisor` and tasks in `Catchup.Fetcher`.	6 years ago
Luke Imhoff	0243726f9b	Move block number out of prose and into metadata ... Realtime block number will set `Logger.metadata(block_number: ...)` for each block number is fetches separately after getting the `newHead` websocket message.	6 years ago
Luke Imhoff	fed7d304e2	Include fetcher in logger metadata ... For each fetcher set the `Logger.metadata(fetcher: ...)` to a short semantic name. For Fetchers that use `BufferedTask`, `BufferedTask` now has an option to set `metadata` passed to `Logger.metadata/1` in 1. GenServer process 2. The `c:init/3` Task 3. The `c:run/2` Tasks	6 years ago
Luke Imhoff	c7d614e2ec	Include date in addition to time in log format	6 years ago
Amanda Sposito	7eef405a36	Add BlockValidationCounter config to disable it in test env.	6 years ago
Amanda Sposito	845b399281	Add a cache to count the addresses with balance > 0.	6 years ago