Database Reference
In-Depth Information
1000
us-west-1
us-east-1
eu-west-1
us-west-2
us-east-2
eu-west-2
100
10
1
0.1
0.01
1E-3
1E-4
0
600
1200
1800
2400
3000
Timeline per slave (second)
Fig. 7.6
The performance of the replication delay for up to 6 replica servers with the framework
enabled, delay
tolerance
D
1;000 ms, and int
v
l
mon
D
60 s
1000
us-west-1
us-east-1
eu-west-1
us-west-2
us-east-2
eu-west-2
100
10
1
0.1
0.01
1E-3
1E-4
0
600
1200
1800
2400
3000
Timeline per slave (second)
Fig. 7.7
The performance of the replication delay for up to 6 replica servers with the framework
enabled, delay
tolerance
D
1;000 ms, and int
v
l
mon
D
120 s
in
eu-west-1
which leads to more congestion on the
us-west-1
side. Similarly, in
Fig.
7.5
, the replication delay tends to surge in both virtualized database servers
in
us-west-1
and
us-west-2
for the same reason of the difference in the geographic
location of the underlying virtualized database server.
Figures
7.7
, and
7.10
-
7.12
show the results of the replication delay for the
experiments using different values for the monitor interval, int
v
l
mon
, and the
tolerance of replication delay, delay
tolerance
, parameters. For example, Fig.
7.7
shows
that
the
virtualized
database
replica
servers
in
us-west-2
,
us-east-2
,
