2.5.redis-主从流程

redis 评论

1.主从同步流程

1.1.保活

  • 请求
    1
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    3
    *1
    $4
    PING
  • 应答
    1
    +PONG

1.2.上报监听端口

  • 请求
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    6
    7
    *3
    $8
    REPLCONF
    $14
    listening-port
    $5
    49314
  • 应答
    1
    +OK

1.3.上报地址

  • 请求
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    6
    7
    *3
    $8
    REPLCONF
    $10
    ip-address
    $9
    127.0.0.1
  • 应答
    1
    +OK

1.4.上报信息

  • 请求
    1
    2
    3
    4
    5
    6
    7
    *3
    $8
    REPLCONF
    $4
    capa
    $3
    eof
  • 应答
    1
    +OK

1.55.上报类型

  • 请求
    1
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    3
    4
    5
    6
    7
    *3
    $8
    REPLCONF
    $4
    capa
    $6
    psync2
  • 应答
    1
    +OK

1.6.上报同步时间戳

  • 请求

    1
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    3
    4
    5
    6
    7
    *3
    $5
    PSYNC
    $1
    ?
    $3
    218

  • 应答(全量)

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    6
    +FULLRESYNC 02e371bd4a31c072e356c2cb0446f7d42ef0ff38 4060
    $227
    REDIS0009.	redis-ver.5.0.12.
    redis-bits.@..ctime.BE.`..used-mem. .....repl-stream-db....repl-id(02e371bd4a31c072e356c2cb0446f7d42ef0ff38..repl-offset.....aof-preamble.....	..................	.	......................
    .
    .O..5.P..

  • 应答(增量)

1
2
3
4
5
6
7
PSYNC
$40
49adee2ad3c3bc3a23a812ddbb2403725079718b
$4
4229
+CONTINUE

1.7.上报信息同步索引

  • 请求
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    8
    9
    10
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    12
    13
    14
    15
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    21
    *3
    $8
    REPLCONF
    $3
    ACK
    $4
    4060
    *3
    $8
    REPLCONF
    $3
    ACK
    $4
    4060
    *3
    $8
    REPLCONF
    $3
    ACK
    $4
    4060
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
REPLCONF
$3
ACK
$4
5960
*3
$8
REPLCONF
$3
ACK
$4
5960
*1
$4
PING
1
processEvent,repl: 49adee2ad3c3bc3a23a812ddbb2403725079718b, offset: 5960

2.附录

2.1 同步报文

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126
127
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132
133
134
135
136
137
138
*1
$4
PING
+PONG
*3
$8
REPLCONF
$14
listening-port
$5
59804
+OK
*3
$8
REPLCONF
$10
ip-address
$9
127.0.0.1
+OK
*3
$8
REPLCONF
$4
capa
$3
eof
+OK
*3
$8
REPLCONF
$4
capa
$6
psync2
+OK
*3
$5
PSYNC
$1
?
$2
-2

+FULLRESYNC db72e13d181ffb0d9cc7384c175a2371a530248b 1
$138
REDIS0007.	redis-ver.3.2.12.
redis-bits.@..ctime.Y.za..used-mem............a.a.......keya.valuea..keyb.valueb.....................y.".W^..*3
$8
REPLCONF
$3
ACK
$1
1

*3
$8
REPLCONF
$3
ACK
$1
1
*3
$8
REPLCONF
$3
ACK
$1
1
*3
$8
REPLCONF
$3
ACK
$1
1
*1
$4
PING
*3
$8
REPLCONF
$3
ACK
$2
15


*3
$8
REPLCONF
$3
ACK
$2
15
*1
$4
PING

*3
$8
REPLCONF
$3
ACK
$2
29

*2
$6
SELECT
$1
0

*3
$3
set
$4
keyc
$6
valuec

*3
$8
REPLCONF
$3
ACK
$2
87

*3
$8
REPLCONF
$3
ACK
$2
87


2.2 同步空包

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83
*1
$4
PING
+PONG
*3
$8
REPLCONF
$14
listening-port
$5
49942
+OK
*3
$8
REPLCONF
$10
ip-address
$9
127.0.0.1
+OK
*3
$8
REPLCONF
$4
capa
$3
eof
+OK
*3
$8
REPLCONF
$4
capa
$6
psync2
+OK
*3
$5
PSYNC
$40
db72e13d181ffb0d9cc7384c175a2371a530248b
$1
1
+FULLRESYNC 49adee2ad3c3bc3a23a812ddbb2403725079718b 1
$77
REDIS0007.	redis-ver.3.2.12.
redis-bits.@..ctime....a..used-mem...........
..*3
$8
REPLCONF
$3
ACK
$1
1
*3
$8
REPLCONF
$3
ACK
$1
1
*3
$8
REPLCONF
$3
ACK
$1
1
*3
$8
REPLCONF
$3
ACK
$1
1
*3
$8
REPLCONF
$3
ACK
$1
1

2.3 同步增量

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195
*1
$4
PING
+PONG
*3
$8
REPLCONF
$14
listening-port
$5
50731
+OK
*3
$8
REPLCONF
$10
ip-address
$9
127.0.0.1
+OK
*3
$8
REPLCONF
$4
capa
$3
eof
+OK
*3
$8
REPLCONF
$4
capa
$6
psync2
+OK
*3
$5
PSYNC
$40
49adee2ad3c3bc3a23a812ddbb2403725079718b
$4
4229
+CONTINUE

*1
$4
PING
*3
$8
REPLCONF
$3
ACK
$4
4242
*1
$4
PING
*3
$8
REPLCONF
$3
ACK
$4
4256
*3
$8
REPLCONF
$3
ACK
$4
4256
*3
$8
REPLCONF
$3
ACK
$4
4256
*3
$8
REPLCONF
$3
ACK
$4
4256
*3
$8
REPLCONF
$3
ACK
$4
4256
*3
$8
REPLCONF
$3
ACK
$4
4256
*3
$8
REPLCONF
$3
ACK
$4
4256
*3
$8
REPLCONF
$3
ACK
$4
4256
*3
$8
REPLCONF
$3
ACK
$4
4256
*3
$8
REPLCONF
$3
ACK
$4
4256
*1
$4
PING
*3
$8
REPLCONF
$3
ACK
$4
4270
*3
$8
REPLCONF
$3
ACK
$4
4270
*3
$8
REPLCONF
$3
ACK
$4
4270
*3
$8
REPLCONF
$3
ACK
$4
4270
*3
$8
REPLCONF
$3
ACK
$4
4270
*3
$8
REPLCONF
$3
ACK
$4
4270
*3
$8
REPLCONF
$3
ACK
$4
4270
*3
$8
REPLCONF
$3
ACK
$4
4270
*3
$8
REPLCONF
$3
ACK
$4
4270

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