Questions tagged [chainbase]
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14 questions
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How can I read block data from chainbase memory of a running node?
I am running nodeos on my local machine. I can get the account data for an account by hitting the chain/get_account API. However, I wish to extend its functionality in the form of a plugin without ...
CommunityBot
- 1
6
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2
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308
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When to use RocksDB compared to Chainbase?
The EOSIO developers website says:
Nodeos stores the transaction history and a current state. The
transaction history is stored in the blocks.log file on disk. State,
which is changed by the ...
- 1,929
0
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1
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82
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Nodeos replaying from snapshot and what it means for the full transaction history
Let's say I have an application with the following transactions on chain with their respective blocks.
block 0 - <nothing>
block 1 - eat
block 2 - sleep
block 3 - play
block 4 - cook
And let't ...
- 604
1
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1
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119
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Can we use mongodb store state?
I read chainbase and fork database, I understood chainbase which stores user state and fork database which stores blocks. So Can I use mongodb to store user state and ignore chainbase? If it can, we ...
CommunityBot
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0
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1
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32
views
chainbase::database error
After program is terminated, user defined object cannot be loaded to chainbase::database.
my code is followed.
enum my_type {
my_inx01_object_type
};
namespace eosio { namespace chain {
using ...
CommunityBot
- 1
0
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1
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27
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Why I didn't initialize database?
I want to add the my multi_index in controller db.
And Finally Adding all class is set up. But When eos program initialize the database, it didn't work.
my error log :
/eos/libraries/chainbase/...
tmm♦
- 2,114
0
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1
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44
views
How is memory aligned in the EOSIO smart contract consensus memory?
Are there any memory savings if I declare a table record that has, say, a 64-bit integer (occupies 8 bytes) and a 16-bit integer (occupies 2 bytes)? Or is it aligned at 64 bits and said record would ...
- 1,929
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1
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80
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How to read data at certain block number on EOS?
How to read data at certain block number on EOS?
e.g.
How could I read the data of a contract's table at certain block number?
- 61
0
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0
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45
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How does session of chainbase work?
Do you have any knowledge about session of chainbase (It means: Each user we can create a session in chainbase and this session exits util user who be deleted. And The session contains many ...
- 121
0
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1
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81
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What is mongodb_plugin used for?
I have some confuse with chain_plugin and mongo_plugin, why do we need them? And if I can modify chainbase which can write directly state to disk, Do I can discard mongoDB?
- 475
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71
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How to start with chainbase?
I am reading chainbase, and I wonder if anyone have idea to start with chainbase? This means: what does it flows, and if I write directly to disk, it is fine?
Because I see in chainbase class, I see ...
CommunityBot
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3
votes
1
answer
80
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Where is the fork database?
I am just reading source code of EOS but I am not clear with fork databases.
I do not know exactly where it is (on RAM or on disk). I also would like to have a look at the exact code. Which files are ...
tmm♦
- 2,114
1
vote
1
answer
47
views
Can the contract data not exist in the chainbase but in an external system such as MongoDB, MySQL
Due to the limitations of the contract, the external system cannot be read, and more data needs to be stored in the actual business to execute the contract based on the data. And these data are ...
- 1,686
0
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1
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711
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What is the ChainBase database used for?
EOSIO appears to make use of the Chainbase database for various functions in the codebase.
What is this used for and how does it relate to the RAM concept in EOSIO? Is it simply the database used to ...
- 163