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add tx caching layer to scribe writer to improve performance when cache_all_tx_hashes isn't on

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Jack Robison 2022-05-10 18:49:22 -04:00
parent 02922845dd
commit 869fc1698c
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GPG key ID: DF25C68FE0239BB2
1 changed files with 22 additions and 3 deletions
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25
scribe/blockchain/service.py
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@ -118,6 +118,7 @@ class BlockchainProcessorService(BlockchainService):
self.hashX_history_cache = LRUCache(min(100, max(0, env.hashX_history_cache_size)))
self.hashX_full_cache = LRUCache(min(100, max(0, env.hashX_history_cache_size)))
self.history_tx_info_cache = LRUCache(2 ** 20)
async def run_in_thread_with_lock(self, func, *args):
# Run in a thread to prevent blocking. Shielded so that
@ -1245,9 +1246,21 @@ class BlockchainProcessorService(BlockchainService):
self.hashX_history_cache[hashX] = tx_nums = self.db.read_history(hashX, limit=None)
else:
tx_nums = self.hashX_history_cache[hashX]
needed_tx_infos = []
append_needed_tx_info = needed_tx_infos.append
tx_infos = {}
for tx_num in tx_nums:
if tx_num in self.history_tx_info_cache:
tx_infos[tx_num] = self.history_tx_info_cache[tx_num]
else:
append_needed_tx_info(tx_num)
if needed_tx_infos:
for tx_num, tx_hash in zip(needed_tx_infos, self.db.get_tx_hashes(needed_tx_infos)):
tx_infos[tx_num] = self.history_tx_info_cache[tx_num] = f'{tx_hash[::-1].hex()}:{bisect_right(self.db.tx_counts, tx_num):d}:'
history = ''
for tx_num, tx_hash in zip(tx_nums, self.db.get_tx_hashes(tx_nums)):
history += f'{hash_to_hex_str(tx_hash)}:{bisect_right(self.db.tx_counts, tx_num):d}:'
for tx_num in tx_nums:
history += tx_infos[tx_num]
self.hashX_full_cache[hashX] = history
return history
@ -1491,9 +1504,15 @@ class BlockchainProcessorService(BlockchainService):
if self.env.cache_all_tx_hashes:
while len(self.db.total_transactions) > self.db.tx_counts[-1]:
self.db.tx_num_mapping.pop(self.db.total_transactions.pop())
if self.tx_count in self.history_tx_info_cache:
self.history_tx_info_cache.pop(self.tx_count)
self.tx_count -= 1
else:
self.tx_count = self.db.tx_counts[-1]
new_tx_count = self.db.tx_counts[-1]
while self.tx_count > new_tx_count:
if self.tx_count in self.history_tx_info_cache:
self.history_tx_info_cache.pop(self.tx_count)
self.tx_count -= 1
self.height -= 1
# self.touched can include other addresses which is