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ae9658a108
Fixes #1144. It's quite simple approach, we just update balance info right upon contract migration. It will slow down migration transactions, but it takes about 1-2 seconds to Seek through balances at mainnet's 3.8M, so the approach should still work good enough. The other idea was to make lazy updates (maintaining contract migration map), but it's more complicated to implement (and implies that a balance get might also do a write). There also is a concern about memory usage, it can give a spike of some tens of megabytes, but that also is considered to be acceptable. |
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