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#chartlet-b63b8eaf45596a97 .chartlet-f-6{opacity:1}.chartlet-wrapper:has(#chartlet-b63b8eaf45596a97-focus-6:checked) #chartlet-b63b8eaf45596a97 .chartlet-n-6 .chartlet-flow-node,.chartlet-wrapper:has(#chartlet-b63b8eaf45596a97-focus-6:checked) #chartlet-b63b8eaf45596a97 .chartlet-n-6 .chartlet-seq-box{stroke-width:3}</style><details class="chartlet-focus"><summary>Focus</summary><fieldset><label><input type="radio" name="chartlet-b63b8eaf45596a97-focus" checked> Show all</label><label><input type="radio" name="chartlet-b63b8eaf45596a97-focus" class="chartlet-focus-node" id="chartlet-b63b8eaf45596a97-focus-0"> Ingress (ingress-prod)</label><label><input type="radio" name="chartlet-b63b8eaf45596a97-focus" class="chartlet-focus-node" id="chartlet-b63b8eaf45596a97-focus-1"> Booking API (api-1)</label><label><input type="radio" name="chartlet-b63b8eaf45596a97-focus" class="chartlet-focus-node" id="chartlet-b63b8eaf45596a97-focus-2"> Booking API (api-2)</label><label><input type="radio" name="chartlet-b63b8eaf45596a97-focus" class="chartlet-focus-node" id="chartlet-b63b8eaf45596a97-focus-3"> Worker (worker-1)</label><label><input type="radio" name="chartlet-b63b8eaf45596a97-focus" class="chartlet-focus-node" id="chartlet-b63b8eaf45596a97-focus-4"> Job queue (jobs-prod)</label><label><input type="radio" name="chartlet-b63b8eaf45596a97-focus" class="chartlet-focus-node" id="chartlet-b63b8eaf45596a97-focus-5"> Bookings (db-prod)</label><label><input type="radio" name="chartlet-b63b8eaf45596a97-focus" class="chartlet-focus-node" id="chartlet-b63b8eaf45596a97-focus-6"> Certificates (files-prod)</label></fieldset></details><figure class="chartlet-figure" data-viz="chart"><figcaption>Course booking in production</figcaption><div class="chartlet-stage"><svg xmlns="http://www.w3.org/2000/svg" width="800" height="1000" viewBox="0 0 800 1000" id="chartlet-b63b8eaf45596a97" role="img" aria-labelledby="chartlet-b63b8eaf45596a97-title chartlet-b63b8eaf45596a97-description" class="chartlet-root"><title id="chartlet-b63b8eaf45596a97-title">Course booking in production</title><desc id="chartlet-b63b8eaf45596a97-description">Architecture diagram with 7 components and 9 connections in 5 boundaries. It shows the environment Production: 7 instances of 6 components of the model; only the connections listed for the instances are drawn. Cloud region: Job queue (jobs-prod), Bookings (db-prod), Certificates (files-prod), Container cluster. Container cluster (in Cloud region): Ingress (ingress-prod), Node A, Node B, Node pool: workers. Node A (in Container cluster): Booking API (api-1). Node B (in Container cluster): Booking API (api-2). Node pool: workers (in Container cluster): Worker (worker-1). Nothing leads into Ingress (ingress-prod). Nothing leads out of Bookings (db-prod) and Certificates (files-prod). Ingress (ingress-prod) (service): connects to Booking API (api-1) (routes, via HTTP) and Booking API (api-2) (routes, via HTTP). Booking API (api-1) (artifact): connects to Bookings (db-prod) (reads, writes, via SQL/TLS) and Job queue (jobs-prod) (queues jobs). Booking API (api-2) (artifact): connects to Bookings (db-prod) (reads, writes, via SQL/TLS) and Job queue (jobs-prod) (queues jobs). Job queue (jobs-prod) (queue): connects to Worker (worker-1) (delivers). Worker (worker-1) (artifact): connects to Certificates (files-prod) (stores certificates) and Bookings (db-prod) (updates, via SQL/TLS). Bookings (db-prod) (database): no outgoing connection. 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width="57.52" height="21" class="chartlet-diagram-chip"/><text x="613" y="559" text-anchor="start" class="chartlet-diagram-chip-text">delivers</text></g><g class="chartlet-f chartlet-f-3 chartlet-f-6"><rect x="292" y="763" width="128.56" height="21" class="chartlet-diagram-chip"/><text x="297" y="777" text-anchor="start" class="chartlet-diagram-chip-text">stores certificates</text></g><g class="chartlet-f chartlet-f-3 chartlet-f-5"><rect x="181.6" y="763" width="78.4" height="36" class="chartlet-diagram-chip"/><text x="255" y="777" text-anchor="end" class="chartlet-diagram-chip-text">updates</text><text x="255" y="792" text-anchor="end" class="chartlet-diagram-chip-text">[SQL/TLS]</text></g><g class="chartlet-f chartlet-n-0 chartlet-f-0 chartlet-f-1 chartlet-f-2"><rect x="188" y="74.5" width="176" height="56" class="chartlet-diagram-shadow"/><rect x="188" y="72" width="176" height="56" class="chartlet-flow-node chartlet-role-blue"><title>Ingress (ingress-prod) – load balancer</title></rect><text x="276" y="97.5" text-anchor="middle" class="chartlet-flow-label">Ingress (ingress-prod)</text><text x="276" y="111.5" text-anchor="middle" class="chartlet-flow-sublabel">load balancer</text></g><g class="chartlet-f chartlet-n-1 chartlet-f-0 chartlet-f-1 chartlet-f-4 chartlet-f-5"><polyline points="68,274.5 216,274.5 228,286.5 228,330.5 68,330.5 68,274.5" class="chartlet-diagram-shadow"/><polyline points="68,272 216,272 228,284 228,328 68,328 68,272" class="chartlet-flow-node chartlet-role-blue"><title>Booking API (api-1) – image: web app and API</title></polyline><line x1="216" y1="272" x2="216" y2="284" class="chartlet-flow-inner"/><line x1="216" y1="284" x2="228" y2="284" class="chartlet-flow-inner"/><text x="148" y="297.5" text-anchor="middle" class="chartlet-flow-label">Booking API (api-1)</text><text x="148" y="311.5" text-anchor="middle" class="chartlet-flow-sublabel">image: web app and API</text></g><g class="chartlet-f chartlet-n-2 chartlet-f-0 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chartlet-role-blue"><title>Worker (worker-1) – image: background jobs</title></polyline><line x1="344" y1="680" x2="344" y2="692" class="chartlet-flow-inner"/><line x1="344" y1="692" x2="356" y2="692" class="chartlet-flow-inner"/><text x="276" y="705.5" text-anchor="middle" class="chartlet-flow-label">Worker (worker-1)</text><text x="276" y="719.5" text-anchor="middle" class="chartlet-flow-sublabel">image: background jobs</text></g><g class="chartlet-f chartlet-n-4 chartlet-f-1 chartlet-f-2 chartlet-f-3 chartlet-f-4"><rect x="520" y="482.5" width="176" height="56" class="chartlet-diagram-shadow"/><rect x="520" y="480" width="176" height="56" class="chartlet-flow-node chartlet-role-violet"/><rect x="516" y="486.5" width="176" height="56" class="chartlet-diagram-shadow"/><rect x="516" y="484" width="176" height="56" class="chartlet-flow-node chartlet-role-violet"><title>Job queue (jobs-prod) – managed queue</title></rect><text x="604" y="509.5" text-anchor="middle" class="chartlet-flow-label">Job queue (jobs-prod)</text><text x="604" y="523.5" text-anchor="middle" class="chartlet-flow-sublabel">managed queue</text></g><g class="chartlet-f chartlet-n-5 chartlet-f-1 chartlet-f-2 chartlet-f-3 chartlet-f-5"><polyline points="164,911.5 164,965.5 166.59,966.794 174.182,968 186.26,969.036 202,969.83 220.33,970.33 240,970.5 259.67,970.33 278,969.83 293.74,969.036 305.818,968 313.41,966.794 316,965.5 316,911.5 313.41,910.206 305.818,909 293.74,907.964 278,907.17 259.67,906.67 240,906.5 220.33,906.67 202,907.17 186.26,907.964 174.182,909 166.59,910.206 164,911.5 164,911.5" class="chartlet-diagram-shadow"/><polyline points="164,909 164,963 166.59,964.294 174.182,965.5 186.26,966.536 202,967.33 220.33,967.83 240,968 259.67,967.83 278,967.33 293.74,966.536 305.818,965.5 313.41,964.294 316,963 316,909 313.41,907.706 305.818,906.5 293.74,905.464 278,904.67 259.67,904.17 240,904 220.33,904.17 202,904.67 186.26,905.464 174.182,906.5 166.59,907.706 164,909 164,909" class="chartlet-flow-node chartlet-role-teal"><title>Bookings (db-prod) – managed database</title></polyline><polyline points="164,909 166.59,910.294 174.182,911.5 186.26,912.536 202,913.33 220.33,913.83 240,914 259.67,913.83 278,913.33 293.74,912.536 305.818,911.5 313.41,910.294 316,909" class="chartlet-diagram-rim"/><text x="240" y="936.5" text-anchor="middle" class="chartlet-flow-label">Bookings (db-prod)</text><text x="240" y="950.5" text-anchor="middle" class="chartlet-flow-sublabel">managed database</text></g><g class="chartlet-f chartlet-n-6 chartlet-f-3 chartlet-f-6"><polyline points="344,910.5 552,910.5 544,966.5 352,966.5 344,910.5" class="chartlet-diagram-shadow"/><polyline points="344,908 552,908 544,964 352,964 344,908" class="chartlet-flow-node chartlet-role-teal"><title>Certificates (files-prod) – object storage</title></polyline><text x="448" y="933.5" text-anchor="middle" class="chartlet-flow-label">Certificates (files-prod)</text><text x="448" y="947.5" text-anchor="middle" class="chartlet-flow-sublabel">object storage</text></g></svg><label class="chartlet-hotspot" id="chartlet-b63b8eaf45596a97-hs-0" for="chartlet-b63b8eaf45596a97-focus-0"></label><label class="chartlet-hotspot" id="chartlet-b63b8eaf45596a97-hs-1" for="chartlet-b63b8eaf45596a97-focus-1"></label><label class="chartlet-hotspot" id="chartlet-b63b8eaf45596a97-hs-2" for="chartlet-b63b8eaf45596a97-focus-2"></label><label class="chartlet-hotspot" id="chartlet-b63b8eaf45596a97-hs-3" for="chartlet-b63b8eaf45596a97-focus-3"></label><label class="chartlet-hotspot" id="chartlet-b63b8eaf45596a97-hs-4" for="chartlet-b63b8eaf45596a97-focus-4"></label><label class="chartlet-hotspot" id="chartlet-b63b8eaf45596a97-hs-5" for="chartlet-b63b8eaf45596a97-focus-5"></label><label class="chartlet-hotspot" id="chartlet-b63b8eaf45596a97-hs-6" for="chartlet-b63b8eaf45596a97-focus-6"></label></div><details class="chartlet-data" data-viz-text><summary>Show chart data</summary><table><caption>Data for Course booking in production</caption><thead><tr><th scope="col">Instance</th><th scope="col">Kind</th><th scope="col">Boundary</th><th scope="col">Connects to</th></tr></thead><tbody><tr><th scope="row">Ingress (ingress-prod)</th><td>service</td><td>Cloud region › Container cluster</td><td>Booking API (api-1) (routes, via HTTP), Booking API (api-2) (routes, via HTTP)</td></tr><tr><th scope="row">Booking API (api-1)</th><td>artifact</td><td>Cloud region › Container cluster › Node A</td><td>Bookings (db-prod) (reads, writes, via SQL/TLS), Job queue (jobs-prod) (queues jobs)</td></tr><tr><th scope="row">Booking API (api-2)</th><td>artifact</td><td>Cloud region › Container cluster › Node B</td><td>Bookings (db-prod) (reads, writes, via SQL/TLS), Job queue (jobs-prod) (queues jobs)</td></tr><tr><th scope="row">Job queue (jobs-prod)</th><td>queue</td><td>Cloud region</td><td>Worker (worker-1) (delivers)</td></tr><tr><th scope="row">Worker (worker-1)</th><td>artifact</td><td>Cloud region › Container cluster › Node pool: workers</td><td>Certificates (files-prod) (stores certificates), Bookings (db-prod) (updates, via SQL/TLS)</td></tr><tr><th scope="row">Bookings (db-prod)</th><td>database</td><td>Cloud region</td><td></td></tr><tr><th scope="row">Certificates (files-prod)</th><td>storage</td><td>Cloud region</td><td></td></tr></tbody></table></details></figure></div>