Production redis settings

Author: jdolle

deployment/services/redis.ts

@@ -28,6 +28,19 @@ export function deployRedis(input: { environment: Environment }) {
           memory: '100Mi',
           cpu: '50m',
         },
+    args: [
+      // When maxmemory is exceeded, the maxmemory-policy is applied.
+      // This maxmemory should be 60-70% of the available memory.
+      '--maxmemory', input.environment.isProduction ? '2048mb' : '32m',
+      // This keeps the most recently used keys. AKA Act like a cache!
+      '--maxmemory-policy', 'allkeys-lru',
+      // Lazy memory eviction is more performant, but could cause memory
+      // to exceed available space if not enough room is given. This is why
+      // the 60-70% is crucial.
+      '--lazyfree-lazy-eviction', 'yes',
+      // This disables snapshotting to save cpu and reduce latency spikes
+      '--save', '""',
+    ],
   });
 
   const host = serviceLocalHost(redisApi.service);

deployment/utils/redis.ts

@@ -1,6 +1,6 @@
 import * as k8s from '@pulumi/kubernetes';
 import * as kx from '@pulumi/kubernetesx';
-import { Output } from '@pulumi/pulumi';
+import { Output, Input } from '@pulumi/pulumi';
 import { getLocalComposeConfig } from './local-config';
 import { normalizeEnv, PodBuilder } from './pod-builder';
 
@@ -14,7 +14,7 @@ export class Redis {
     },
   ) {}
 
-  deploy({ limits }: { limits: k8s.types.input.core.v1.ResourceRequirements['limits'] }) {
+  deploy({ limits, args }: { limits: k8s.types.input.core.v1.ResourceRequirements['limits'], args?: Input<Input<string>[]> }) {
     const redisService = getLocalComposeConfig().service('redis');
     const name = 'redis-store';
 
@@ -64,6 +64,7 @@ export class Redis {
         {
           name,
           image: redisService.image,
+          args,
           env,
           volumeMounts,
           ports: [{ containerPort: PORT, protocol: 'TCP' }],