[leveldb] How use Filter in levelDB to search key

Discussion:

The Nguyen Xuan

2014-12-04 10:51:07 UTC

I have very big database (>1TB) using LevelDb, when i want to search a key
(existing or no existing).

I have use Iterator, but very slow.

How way to search fast?

Thank

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Ren Z

2015-04-09 14:09:29 UTC

Permalink

1Tb in single db? Does it work ok?
Anyway I would try using bloom filters, read about them.

Even better I would split into many dbs (perhaps each one would be
responsible for some range of keys)

Post by The Nguyen Xuan
I have very big database (>1TB) using LevelDb, when i want to search a key
(existing or no existing).
I have use Iterator, but very slow.
How way to search fast?
Thank

The Nguyen Xuan

2015-07-31 07:00:35 UTC

Permalink

I used bloom filters, too. but this did not improve the read speed.

Finally, I split into many dbs.

Thank for your reply

Post by Ren Z
1Tb in single db? Does it work ok?
Anyway I would try using bloom filters, read about them.
Even better I would split into many dbs (perhaps each one would be
responsible for some range of keys)

Post by The Nguyen Xuan
I have very big database (>1TB) using LevelDb, when i want to search a
key (existing or no existing).
I have use Iterator, but very slow.
How way to search fast?
Thank