docs/images/cache_lifecycles.svg

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stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="774.5" x2="934.5" y1="439.8906" y2="439.8906"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="127" x="781.5" y="434.8247">create new IK cache</text><polygon fill="#A80036" points="762.5,465.0234,772.5,469.0234,762.5,473.0234,766.5,469.0234" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="189" x2="768.5" y1="469.0234" y2="469.0234"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="73" x="196" y="463.9575">operation 1</text><polygon fill="#A80036" points="1020.5,494.1563,1030.5,498.1563,1020.5,502.1563,1024.5,498.1563" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="774.5" x2="1026.5" y1="498.1563" y2="498.1563"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="47" x="781.5" y="493.0903">fetch IK</text><polygon fill="#A80036" points="1020.5,523.2891,1030.5,527.2891,1020.5,531.2891,1024.5,527.2891" style="stroke: #A80036; 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stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="194" x2="773.5" y1="685.9531" y2="685.9531"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="137" x="206" y="680.8872">complete operation 1</text><polygon fill="#A80036" points="762.5,736.0859,772.5,740.0859,762.5,744.0859,766.5,740.0859" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="189" x2="768.5" y1="740.0859" y2="740.0859"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="73" x="196" y="735.02">operation 2</text><polygon fill="#A80036" points="928.5,765.2188,938.5,769.2188,928.5,773.2188,932.5,769.2188" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="774.5" x2="934.5" y1="769.2188" y2="769.2188"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="112" x="781.5" y="764.1528">get IK from cache</text><polygon fill="#A80036" points="200,794.3516,190,798.3516,200,802.3516,196,798.3516" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="194" x2="773.5" y1="798.3516" y2="798.3516"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="137" x="206" y="793.2856">complete operation 2</text><polygon fill="#A80036" points="762.5,848.4844,772.5,852.4844,762.5,856.4844,766.5,852.4844" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="189" x2="768.5" y1="852.4844" y2="852.4844"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="85" x="196" y="847.4185">close session</text><polygon fill="#A80036" points="531,877.6172,521,881.6172,531,885.6172,527,881.6172" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="525" x2="773.5" y1="881.6172" y2="881.6172"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="141" x="537" y="876.5513">update Session cache</text><polygon fill="#A80036" points="45,906.75,35,910.75,45,914.75,41,910.75" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="39" x2="188" y1="910.75" y2="910.75"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="131" x="51" y="905.6841">API call User 1 result</text><polygon fill="#A80036" points="177,985.8828,187,989.8828,177,993.8828,181,989.8828" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="34" x2="183" y1="989.8828" y2="989.8828"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="91" x="41" y="984.8169">API call User 2</text><polygon fill="#A80036" points="334,1015.0156,344,1019.0156,334,1023.0156,338,1019.0156" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="189" x2="340" y1="1019.0156" y2="1019.0156"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="122" x="196" y="1013.9497">create new session</text><polygon fill="#A80036" points="762.5,1059.2813,772.5,1063.2813,762.5,1067.2813,766.5,1063.2813" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="520" x2="768.5" y1="1063.2813" y2="1063.2813"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="194" x="527" y="1043.0825">get cached session if available</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="158" x="527" y="1058.2153">else create new instance</text><polygon fill="#A80036" points="762.5,1088.4141,772.5,1092.4141,762.5,1096.4141,766.5,1092.4141" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="189" x2="768.5" y1="1092.4141" y2="1092.4141"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="73" x="196" y="1087.3481">operation 1</text><polygon fill="#A80036" points="1020.5,1117.5469,1030.5,1121.5469,1020.5,1125.5469,1024.5,1121.5469" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="774.5" x2="1026.5" y1="1121.5469" y2="1121.5469"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="47" x="781.5" y="1116.481">fetch IK</text><polygon fill="#A80036" points="643.5,1146.6797,633.5,1150.6797,643.5,1154.6797,639.5,1150.6797" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="637.5" x2="773.5" y1="1150.6797" y2="1150.6797"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="118" x="649.5" y="1145.6138">get SK from cache</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="774.5" x2="816.5" y1="1179.8125" y2="1179.8125"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="816.5" x2="816.5" y1="1179.8125" y2="1192.8125"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="775.5" x2="816.5" y1="1192.8125" y2="1192.8125"/><polygon fill="#A80036" points="785.5,1188.8125,775.5,1192.8125,785.5,1196.8125,781.5,1192.8125" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="113" x="781.5" y="1174.7466">decrypt IK with SK</text><polygon fill="#A80036" points="928.5,1217.9453,938.5,1221.9453,928.5,1225.9453,932.5,1221.9453" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="774.5" x2="934.5" y1="1221.9453" y2="1221.9453"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="53" x="781.5" y="1216.8794">cache IK</text><polygon fill="#A80036" points="200,1247.0781,190,1251.0781,200,1255.0781,196,1251.0781" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="194" x2="773.5" y1="1251.0781" y2="1251.0781"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="137" x="206" y="1246.0122">complete operation 1</text><polygon fill="#A80036" points="762.5,1301.2109,772.5,1305.2109,762.5,1309.2109,766.5,1305.2109" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="189" x2="768.5" y1="1305.2109" y2="1305.2109"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="85" x="196" y="1300.145">close session</text><polygon fill="#A80036" points="531,1330.3438,521,1334.3438,531,1338.3438,527,1334.3438" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="525" x2="773.5" y1="1334.3438" y2="1334.3438"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="141" x="537" y="1329.2778">update Session cache</text><polygon fill="#A80036" points="45,1359.4766,35,1363.4766,45,1367.4766,41,1363.4766" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="39" x2="188" y1="1363.4766" y2="1363.4766"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="131" x="51" y="1358.4106">API call User 2 result</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="346" x2="388" y1="1457.7422" y2="1457.7422"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="388" x2="388" y1="1457.7422" y2="1470.7422"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="347" x2="388" y1="1470.7422" y2="1470.7422"/><polygon fill="#A80036" points="357,1466.7422,347,1470.7422,357,1474.7422,353,1470.7422" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="90" x="353" y="1437.5435">session cache</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="155" x="353" y="1452.6763">expire timeout triggered</text><polygon fill="#A80036" points="498,1495.875,508,1499.875,498,1503.875,502,1499.875" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="346" x2="504" y1="1499.875" y2="1499.875"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="91" x="353" y="1494.8091">expire session</text><polygon fill="#A80036" points="933.5,1525.0078,943.5,1529.0078,933.5,1533.0078,937.5,1529.0078" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="774.5" x2="939.5" y1="1529.0078" y2="1529.0078"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="147" x="781.5" y="1523.9419">securely close IK cache</text><line style="stroke: #A80036; stroke-width: 2.0;" x1="936.5" x2="954.5" y1="1520.0078" y2="1538.0078"/><line style="stroke: #A80036; stroke-width: 2.0;" x1="936.5" x2="954.5" y1="1538.0078" y2="1520.0078"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="189" x2="231" y1="1583.1406" y2="1583.1406"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="231" x2="231" y1="1583.1406" y2="1596.1406"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="190" x2="231" y1="1596.1406" y2="1596.1406"/><polygon fill="#A80036" points="200,1592.1406,190,1596.1406,200,1600.1406,196,1596.1406" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="116" x="196" y="1578.0747">shutdown initiated</text><polygon fill="#A80036" points="334,1621.2734,344,1625.2734,334,1629.2734,338,1625.2734" style="stroke: #A80036; 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stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="346" x2="509" y1="1683.5391" y2="1683.5391"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="129" x="353" y="1678.4731">close Session cache</text><line style="stroke: #A80036; stroke-width: 2.0;" x1="506" x2="524" y1="1674.5391" y2="1692.5391"/><line style="stroke: #A80036; stroke-width: 2.0;" x1="506" x2="524" y1="1692.5391" y2="1674.5391"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="189" x2="231" y1="1712.6719" y2="1712.6719"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="231" x2="231" y1="1712.6719" y2="1725.6719"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="190" x2="231" y1="1725.6719" y2="1725.6719"/><polygon fill="#A80036" points="200,1721.6719,190,1725.6719,200,1729.6719,196,1725.6719" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="132" x="196" y="1707.606">shutdown completes</text><rect fill="#DDDDDD" height="79.1875" rx="5" ry="5" style="stroke: #000000; stroke-width: 1.0;" width="305" x="11" y="1813.9688"/><text fill="#000000" font-family="sans-serif" font-size="14" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="39" x="22" y="1833.9639">Type</text><text fill="#000000" font-family="sans-serif" font-size="14" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="90" x="71" y="1833.9639">Description</text><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="21" x="21" y="1850.2607">MK</text><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="209" x="70" y="1850.2607">Master Key, root key from KMS</text><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="18" x="21" y="1866.5576">SK</text><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="203" x="70" y="1866.5576">System Key, encrypted by MK</text><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="12" x="21" y="1882.8545">IK</text><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="236" x="70" y="1882.8545">Intermediate Key, encrypted by SK</text><line style="stroke: #000000; 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@startuml

skinparam shadowing false

legend left
|= Type |= Description |
| MK | Master Key, root key from KMS |
| SK | System Key, encrypted by MK |
| IK | Intermediate Key, encrypted by SK |
endlegend

participant Caller
participant API
boundary SessionFactory
collections "Session Cache"
collections "SK Cache"
boundary Session
collections "IK Cache"
database Metastore
entity KMS

API -> API : startup initiated
API -> SessionFactory : create new factory
SessionFactory -> "Session Cache" : create new \nSession cache
activate "Session Cache"
SessionFactory -> "SK Cache" : create new \nSK cache
activate "SK Cache"
API -> API : startup completes
|||
Caller -> API : API call User 1
API -> SessionFactory : create new session
SessionFactory -> Session : create new instance
SessionFactory -> "Session Cache" : cache session
Session -> "IK Cache" : create new IK cache
activate "IK Cache"
API -> Session : operation 1
Session -> Metastore : fetch IK
Session -> Metastore : fetch SK
Session -> KMS : decrypt SK with MK
Session -> "SK Cache" : cache SK
Session -> Session : decrypt IK with SK
Session -> "IK Cache" : cache IK
Session -> API : complete operation 1
|||
API -> Session : operation 2
Session -> "IK Cache" : get IK from cache
Session -> API : complete operation 2
|||
API -> Session : close session
Session -> "Session Cache" : update Session cache
deactivate "IK Cache"
API -> Caller : API call User 1 result
|||
|||
Caller -> API : API call User 2
API -> SessionFactory : create new session
"Session Cache" -> Session : get cached session if available\nelse create new instance
activate "IK Cache"
API -> Session : operation 1
Session -> Metastore : fetch IK
Session -> "SK Cache" : get SK from cache
Session -> Session : decrypt IK with SK
Session -> "IK Cache" : cache IK
Session -> API : complete operation 1
|||
API -> Session : close session
Session -> "Session Cache" : update Session cache
deactivate "IK Cache"
API -> Caller : API call User 2 result
|||
|||
SessionFactory -> SessionFactory : session cache \nexpire timeout triggered
SessionFactory -> "Session Cache" : expire session
Session -> "IK Cache" : securely close IK cache
destroy "IK Cache"
|||
API -> API : shutdown initiated
API -> SessionFactory : close session factory
SessionFactory -> "SK Cache" : securely close SK cache
destroy "SK Cache"
SessionFactory -> "Session Cache" : close Session cache
destroy "Session Cache"
API -> API : shutdown completes

@enduml

PlantUML version 1.2019.11(Sun Sep 22 10:02:15 GMT 2019)
(GPL source distribution)
Java Runtime: OpenJDK Runtime Environment
JVM: OpenJDK 64-Bit Server VM
Java Version: 14-ea+15
Operating System: Linux
Default Encoding: UTF-8
Language: en
Country: US
--></g></svg>