argos - Node process and @aftonbladet/loading-cache monitoring

About the name

Argus Panoptes or Argos was a hundred-eyed giant in Greek mythology. He was a giant, the son of Arestor, whose name "Panoptes" meant "the all-seeing one". His main task was to guard Io.

Source

Usage

Configure some environment variables:

| VARIABLE | Description | Mandatory | Default | Example | |:-------------------------|:-----------------------------------------|:----------|:--------|:-------------| | ARGOS_ENABLED | Set to true or yes to enable argos | Yes | | true | | ARGOS_JOB_NAME | The prometheus job name | Yes | | iris-stage | | ARGOS_INSTANCE | The prometheus instance name | No | $BOXFUSE_INSTANCE_ID or local| worker-0 | | ARGOS_GATEWAY_URL | The prometheus push gateway URL | No | http://prometheus-pushgateway.local.net:9091 | http://prometheus-pushgateway-prod.aftonbladet.io:9091 | | ARGOS_METRIC_PREFIX | A prefix that is added to all created metric names | No | ''| iris_ | | ARGOS_METRIC_HELP_PREFIX | A prefix that is added to all help texts | No | Metrics for | Iris metrics for | | ARGOS_PUSH_INTERVAL | How often in milliseconds to push to the prometheus gateway | No | 10000 | 3000 | | ARGOS_PERFORM_CLEANUP | If all metrics matching the job name are to be deleted from the push gateway on startup. This also tries to remove the added metrics on shutdown. | No | true | false |

Add the following as early as possible in your code:

require('@aftonbladet/argos');

Monitor an @aftonbladet/loading-cache

Use the monitored eviction strategy and remember to specify a name:

import LoadingCache from '@aftonbladet/loading-cache';
import { MonitoredLruEvictionStrategy } from '@aftonbladet/argos';

const cache = new LoadingCache({
    evictionStrategy: new MonitoredLruEvictionStrategy({
        maxEntries: articleApiCacheMaxEntries,
        maxAge: articleApiCacheTtl,
        name: 'article_api_cache',
    }),
});

Publish

npm version <major|minor|patch>