BanyanDB_Storage_Quick_reference

F

-

internal timestamp(ms)

\\0

s

user item1

ms + ttl*1000

Hsize

z

Hash

maxQseq

user value

user key

Bsize

type

minQseq

K

(or member in zset)

Queue1

init to MAX/2

Zsize

bitmap

The expired timestamp set by user. 0 for default.

t

0

Key

user score

hset

v

qsize = maxseq - minseq + 1

V

set

--------flush into _data: (chunkserver)----------

Jlseq

q

user val content

Qseq

sz

user key content

Jlist

1024 * 16 Bytes(128K bits)

h

vset name

j

KV

zset name

table_id

TTL

=

string length of

Value

zset //@key - user key//@score - an integer which indicates the weight for this key

ns_id

user-input other content

user item

Command/Interface

Vscore

VSet

BFilter

only 1 bytes to store the length of \"main key\"(name .etc.)

score

TODO: --------flush into _meta: (chunkserver)---------- (binlog)TODO: --------flush into _data: (agent)---------- (cache)

（or bname）

（or field in bfilter）

ZSet

qpush_front [item2 ...] qpush_back [item2 ...]

initialized to 1 if a zset data type newly created.

The timestamp(internal) when `set` was called. only former-48-bits is used.

key in bset

expire(ms)

name in hset

jlseq

vset

（or field in hash）

separator

Filter

Vsize

dbkey

initialized to 1 if a hash data type newly created. insert to this hash data will increase hsize.

bf_count

QSeq

#define QSEQ_MIN (1000) #define QSEQ_MAX (18446744073709551615ull)#define QSEQ_INIT (QSEQ_MAX / 2)

Queue

hash name

seq

Zscore

init seq=1000 or user-input(if 1000)

bf_count indicates how many slot has been set in this bloom filter.