Blockchain

A blockchain is a digitized, decentralized ledger of transactions. Blockchains record a continuously growing list of records, called blocks, which are linked and secured using cryptography.
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Whiskers' regex looks for <..>
as opposed to tokenizing the input, so it is not able to detect truncated/mistyped input.
For example it can't detect that <!b
is not terminated in<?b> X <!b Y </b>
.
With some heuristics it could be improved: match for <?
, <!
and </
and only allow identifiers which are terminated with >
, otherwise it is invalid.
_Originally posted by @axic in h
The backup storage format being defined very simple and dumb, which is expected, there are a few bad cases people need to be careful with.
- on the backup side, two backup coordinators can run at the same time and write to the storage at the same time, creating duplicate, or even worse, conflicting (if the two coordinators read different chains) backups.
- on the "read" side, backup CLI tool
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When deploying fabric in enterprise's intranet (without the ability to access internet), users maybe upload chaincode builder images and chaincode runtime images to a private docker registry which requires authentication when pulling images.
I think fabric can support this scenario by adding configuration in chaincode
section of core.yaml, such as:
chaincode:
registry:
- I've opened a support ticket before filing this issue.
Issue
Tests are not isolated from each other. I reproduced it using the metacoin box tutorial, adding a new test at the end that checks again the balance. As per the "clean-room" the first account should have all 10000 tokens. It's not.
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Problem
Loss and latency metrics might be interesting from the gossip ping-pong protocol.
Proposed Solution
Capture and report them.
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Creating a new issue based on lbryio/lbry-sdk#877
- Update ensure_directory_exists() to check that the directory is writable by the current process.
- If it's not, return a useful error
- Add tests to cover the case when
- download directory does not exist
- download dir exists but is not writable
- dir exists an
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The fuzz tests we have don't run on my machine anymore with go1.18. dvyukov/go-fuzz is basically deprecated at this point. We should upgrade to language-native testing.F
even if it's not that great yet.
Basically the fuzz tests should stay the same, but the build step is changed:
- remove
make
-level fuzz references - fuzz tests that don't need to import from other packages can live in
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Jul 1, 2022
In working on informalsystems/tendermint-rs#1144, I see that the statesync.fetchers
configuration option is serialized as a string. Does it need to be a string? It seems like it should be an integer value.
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Mar 15, 2022 - JavaScript
A parametrized option to set the blocksize would be useful to experiment with. As quorum is used in a private setting I think this option should be available
The custom parseUrl()
implementation contains a potential edge case issue regarding the parsing of ports.
Consider the following group in the regular expression that determines basic acceptance of the URL: StringUtilities.cpp#L61-L62
// optional port
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System information
Geth
Version: 1.10.13-stable
Git Commit: 7a0c19f813e285516f4b525305fd73b625d2dec8
Architecture: amd64
Go Version: go1.17.3
Operating System: linux
GOPATH=
GOROOT=go
Expected behaviour
Close files that aren't in use / have a settable limit
Actual behaviour
Every database file it opens stays open for the duration of the sync
Steps to re