The document discusses Netflix's use of Elasticsearch for querying log events. It describes how Netflix evolved from storing logs in files to using Elasticsearch to enable interactive exploration of billions of log events. It also summarizes some of Netflix's best practices for running Elasticsearch at scale, such as automatic sharding and replication, flexible schemas, and extensive monitoring.
[db tech showcase Tokyo 2017] D21: ついに Red Hat Enterprise Linuxで SQL Serverが使...Insight Technology, Inc.
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いよいよリリースが間近に迫ったSQL Server 2017 Linux版。SQL Serverの第一人者 Dr. Kこと熊澤 幸生がリリース版を待ちきれずにRed Hat Enterprise Linux上で検証してみました。
Windows版と Linux版で果たしてSQL Serverの処理性能に差があるのか?注目の検証結果をいち早くお知らせします。
3. 1 200000
SELEC T q u e r y
SELEC T q u e r y (t h r e a d p o o l)
Ha n d le r So c k e t
800000
600000
400000
200000
# o f c o n c u rre n t c o n n e c t io n s
32768
1 6384
81 92
4096
2048
1 024
51 2
256
1 28
64
32
16
8
4
2
0
1
q u e rie s p e r s e c o n d
1 000000
19. 200000
1 80000
1 40000
1 20000
1 00000
80000
60000
40000
SELEC T q u e r y
20000
SELEC T q u e r y (t h r e a d p o o l)
# o f c o n c u rre n t c o n n e c t io n s
32768
1 6384
81 92
4096
2048
1 024
51 2
256
1 28
64
32
16
8
4
2
0
1
q u e rie s p e r s e c o n d
1 60000
23. 2500000
S EL EC T q u e r y
S EL EC T q u e r y (t h r e a d p o o l)
Ha n d le r S o c k e t
Ha n d le r S o c k e t (p ip e lin in g x 5)
HANDL ER q u e r y (t h r e a d p o o l)
HANDL ER q u e r y S S PS (t h r e a d p o o l)
1 500000
1 000000
500000
# o f c o n c u rre n t c o n n e c t io n s
32768
1 6384
81 92
4096
2048
1 024
51 2
256
1 28
64
32
16
8
4
2
0
1
q u e rie s p e r s e c o n d
2000000
28. 構成
clients
port 9998, 9999
HandlerSocket Listener
prepare, execute
response
hs module
Transaction management etc.
find, update, etc.
result
API for hs modules
Handler Interface
Storage engines
34. 1 200000
HS2.0, s im p le q u e r y
HS2.0, in n e r jo in
800000
600000
400000
200000
# o f c o n c u rre n t c o n n e c t io n s
1 6384
81 92
4096
2048
1 024
51 2
256
1 28
64
32
16
8
4
2
0
1
q u e rie s p e r s e c o n d
1 000000