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HugoRCD merged 4 commits into from
Jun 11, 2026
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fix: show canonical env var names in adapter messages #379

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198b89d
fix: show canonical env var names in adapter messages
HugoRCD Jun 11, 2026
4bd125a
refactor: drop env-var hint from deprecated alias warnings
HugoRCD Jun 11, 2026
8f73c68
docs: use canonical Better Stack env var name consistently
HugoRCD Jun 11, 2026
250f2dc
feat(otlp): accept OTLP_ENDPOINT / OTLP_HEADERS as DX aliases
HugoRCD Jun 11, 2026
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2 changes: 1 addition & 1 deletion .agents/skills/create-adapter/SKILL.md
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Expand Up @@ -59,7 +59,7 @@ Create `packages/evlog/src/adapters/{name}.ts`. Read [references/adapter-templat

The contract is now `defineHttpDrain<TConfig>({ resolve, encode })`. You only ship two pieces of logic:

1. **`resolve()`** — produce a fully-resolved config or `null` to skip. Use `resolveAdapterConfig` for the standard precedence (overrides → `runtimeConfig.evlog.{name}` → `runtimeConfig.{name}` → `NUXT_{NAME}_*` → `{NAME}_*`).
1. **`resolve()`** — produce a fully-resolved config or `null` to skip. Use `resolveAdapterConfig` for the standard precedence (overrides → `runtimeConfig.evlog.{name}` → `runtimeConfig.{name}` → env vars). List `NUXT_{NAME}_*` before `{NAME}_*` in `ConfigField.env` for silent Nuxt compat; show only `{NAME}_*` in user-facing messages via `formatPublicEnvKeys`.
2. **`encode(events, config)`** — produce `{ url, headers, body }` for a batch of events (or `null` to skip). HTTP transport, retries, timeout, and error logging are handled by `defineHttpDrain`.

Key rules:
Expand Down
8 changes: 4 additions & 4 deletions .agents/skills/create-adapter/references/adapter-template.md
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Expand Up @@ -7,7 +7,7 @@ Replace `{Name}`, `{name}`, and `{NAME}` with the actual service name.
```typescript
import type { WideEvent } from '../types'
import type { ConfigField } from '../shared/config'
import { resolveAdapterConfig } from '../shared/config'
import { formatPublicEnvKeys, resolveAdapterConfig } from '../shared/config'
import { defineHttpDrain } from '../shared/drain'

// --- 1. Config Interface -------------------------------------------------
Expand Down Expand Up @@ -99,13 +99,13 @@ export async function sendBatchTo{Name}(
* 1. Overrides passed to create{Name}Drain()
* 2. runtimeConfig.evlog.{name}
* 3. runtimeConfig.{name}
* 4. Environment variables: NUXT_{NAME}_*, {NAME}_*
* 4. Environment variables: {NAME}_*
*
* @example
* ```ts
* import { create{Name}Drain } from 'evlog/{name}'
*
* // Zero config — set NUXT_{NAME}_API_KEY env var
* // Zero config — set {NAME}_API_KEY env var
* defineEvlog({ drain: create{Name}Drain() })
*
* // With overrides
Expand All @@ -119,7 +119,7 @@ export function create{Name}Drain(overrides?: Partial<{Name}Config>) {
resolve: async () => {
const config = await resolveAdapterConfig<{Name}Config>('{name}', FIELDS, overrides)
if (!config.apiKey) {
console.error('[evlog/{name}] Missing apiKey. Set NUXT_{NAME}_API_KEY env var or pass to create{Name}Drain()')
console.error(`[evlog/{name}] Missing apiKey. Set ${formatPublicEnvKeys(['NUXT_{NAME}_API_KEY', '{NAME}_API_KEY'])} env var or pass to create{Name}Drain()`)
return null
}
return config as {Name}Config
Expand Down
7 changes: 7 additions & 0 deletions .changeset/adapter-env-messages-dx.md
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@@ -0,0 +1,7 @@
---
"evlog": patch
---

Adapter error and deprecation messages now show canonical environment variable names only (`BETTER_STACK_API_KEY`, `AXIOM_API_KEY`, `SENTRY_DSN`, etc.). `NUXT_*` aliases still resolve silently for backward compatibility, but are no longer mentioned in console output or documentation.

The OTLP adapter now also accepts the shorter `OTLP_ENDPOINT` / `OTLP_HEADERS` env vars as aliases for the standard `OTEL_EXPORTER_OTLP_ENDPOINT` / `OTEL_EXPORTER_OTLP_HEADERS`.
16 changes: 8 additions & 8 deletions apps/docs/content/3.integrate/adapters/01.overview.md
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Expand Up @@ -347,29 +347,29 @@ Every adapter receives a `DrainContext` with:

All adapters support automatic configuration via environment variables. No code changes needed when deploying to different environments.

Each adapter reads from `NUXT_*` prefixed variables (for Nuxt/Nitro runtimeConfig) and unprefixed fallbacks (for any framework):
Each adapter reads from standard environment variables — the same names work in every framework:

```bash [.env]
# Axiom (NUXT_AXIOM_* or AXIOM_*)
# Axiom
AXIOM_API_KEY=xaat-xxx
AXIOM_DATASET=my-logs

# OTLP (NUXT_OTLP_* or OTEL_*)
# OTLP
OTLP_ENDPOINT=https://otlp.example.com

# HyperDX (NUXT_HYPERDX_* or HYPERDX_*)
# HyperDX
HYPERDX_API_KEY=<YOUR_HYPERDX_API_KEY_HERE>

# PostHog (NUXT_POSTHOG_* or POSTHOG_*)
# PostHog
POSTHOG_API_KEY=phc_xxx

# Sentry (NUXT_SENTRY_* or SENTRY_*)
# Sentry
SENTRY_DSN=https://key@o0.ingest.sentry.io/123

# Better Stack (NUXT_BETTER_STACK_* or BETTER_STACK_*)
# Better Stack
BETTER_STACK_API_KEY=your-source-token

# Datadog (NUXT_DATADOG_* or DATADOG_* or DD_*)
# Datadog
DD_API_KEY=your-api-key
DD_SITE=datadoghq.eu
```
Comment on lines +350 to 375

@coderabbitai coderabbitai Bot Jun 11, 2026

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⚠️ Potential issue | 🟡 Minor | ⚡ Quick win

Better Stack env-var naming is still inconsistent across the docs.

Both files now mention BETTER_STACK_API_KEY, but the Better Stack tables still list BETTER_STACK_SOURCE_TOKEN. Update the prose/example and the table rows to one public name in both files.

🤖 Prompt for AI Agents 
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@apps/docs/content/3.integrate/adapters/01.overview.md` around lines 350 -
375, Unify the Better Stack environment variable name across the docs by
choosing a single public name (replace BETTER_STACK_API_KEY with
BETTER_STACK_SOURCE_TOKEN): update the env block example, any prose mentions,
and all Better Stack table rows so they consistently use
BETTER_STACK_SOURCE_TOKEN; ensure any explanatory text that refers to the
variable name is adjusted accordingly (search for BETTER_STACK_API_KEY and
BETTER_STACK_SOURCE_TOKEN and standardize them to the chosen symbol in the code
block and tables).

Expand Down
26 changes: 11 additions & 15 deletions apps/docs/content/3.integrate/adapters/cloud/01.axiom.md
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Expand Up @@ -132,21 +132,17 @@ The adapter reads configuration from multiple sources (highest priority first):

1. **Overrides** passed to `createAxiomDrain()`
2. **Runtime config** at `runtimeConfig.axiom` (Nuxt/Nitro only)
3. **Environment variables** (`AXIOM_*` or `NUXT_AXIOM_*`)
3. **Environment variables** (`AXIOM_*`)

### Environment Variables

| Variable | Nuxt alias | Description |
|----------|------------|-------------|
| `AXIOM_API_KEY` | `NUXT_AXIOM_API_KEY` | Axiom API token with ingest permissions |
| `AXIOM_DATASET` | `NUXT_AXIOM_DATASET` | Dataset name to ingest logs into |
| `AXIOM_ORG_ID` | `NUXT_AXIOM_ORG_ID` | Organization ID (required for Personal Access Tokens) |
| `AXIOM_EDGE_URL` | `NUXT_AXIOM_EDGE_URL` | Edge base URL for ingest/query (for edge deployments) |
| `AXIOM_URL` | `NUXT_AXIOM_URL` | API base URL (legacy/default ingest endpoint) |

::callout{icon="i-lucide-info" color="info"}
In Nuxt/Nitro, use the `NUXT_` prefix so values are available via `useRuntimeConfig()`. In all other frameworks, use the unprefixed variables.
::
| Variable | Description |
|----------|-------------|
| `AXIOM_API_KEY` | Axiom API token with ingest permissions |
| `AXIOM_DATASET` | Dataset name to ingest logs into |
| `AXIOM_ORG_ID` | Organization ID (required for Personal Access Tokens) |
| `AXIOM_EDGE_URL` | Edge base URL for ingest/query (for edge deployments) |
| `AXIOM_URL` | API base URL (legacy/default ingest endpoint) |

### Runtime Config (Nuxt only)

Expand All @@ -156,8 +152,8 @@ Configure via `nuxt.config.ts` for type-safe configuration:
export default defineNuxtConfig({
runtimeConfig: {
axiom: {
apiKey: '', // Set via NUXT_AXIOM_API_KEY
dataset: '', // Set via NUXT_AXIOM_DATASET
apiKey: '', // Set via AXIOM_API_KEY
dataset: '', // Set via AXIOM_DATASET
},
},
})
Expand Down Expand Up @@ -213,7 +209,7 @@ evlog sends structured wide events that are perfect for Axiom's APL query langua
### Missing dataset or apiKey error

```text [Console]
[evlog/axiom] Missing dataset or apiKey. Set NUXT_AXIOM_API_KEY/NUXT_AXIOM_DATASET env vars or pass to createAxiomDrain()
[evlog/axiom] Missing dataset or apiKey. Set AXIOM_API_KEY/AXIOM_DATASET env vars or pass to createAxiomDrain()
```

Make sure your environment variables are set and the server was restarted after adding them.
Expand Down
17 changes: 4 additions & 13 deletions apps/docs/content/3.integrate/adapters/cloud/02.otlp.md
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Expand Up @@ -133,28 +133,19 @@ The adapter reads configuration from multiple sources (highest priority first):

### Environment Variables

| Variable | Nuxt alias | Description |
|----------|------------|-------------|
| `OTLP_ENDPOINT` | `NUXT_OTLP_ENDPOINT` | OTLP HTTP endpoint (e.g., `http://localhost:4318`) |
| `OTLP_SERVICE_NAME` | `NUXT_OTLP_SERVICE_NAME` | Override service name |
| `OTLP_HEADERS` | `NUXT_OTLP_HEADERS` | Custom headers (format: `Key=Value,Key2=Value2`) |
| `OTLP_AUTH` | `NUXT_OTLP_AUTH` | Shortcut for `Authorization` header |

Standard OpenTelemetry variables are also supported as fallbacks:

| Variable | Description |
|----------|-------------|
| `OTEL_EXPORTER_OTLP_ENDPOINT` | OTLP endpoint |
| `OTEL_EXPORTER_OTLP_HEADERS` | Headers in OTEL format |
| `OTEL_SERVICE_NAME` | Service name |
| `OTLP_ENDPOINT` | OTLP HTTP endpoint (e.g., `http://localhost:4318`). The standard `OTEL_EXPORTER_OTLP_ENDPOINT` also works. |
| `OTLP_HEADERS` | Headers as `key=value` pairs, comma-separated. The standard `OTEL_EXPORTER_OTLP_HEADERS` also works. |
| `OTEL_SERVICE_NAME` | Service name override |

### Runtime Config (Nuxt only)

```typescript [nuxt.config.ts]
export default defineNuxtConfig({
runtimeConfig: {
otlp: {
endpoint: '', // Set via NUXT_OTLP_ENDPOINT
endpoint: '', // Set via OTLP_ENDPOINT (or OTEL_EXPORTER_OTLP_ENDPOINT)
},
},
})
Expand Down
14 changes: 7 additions & 7 deletions apps/docs/content/3.integrate/adapters/cloud/03.posthog.md
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Expand Up @@ -128,14 +128,14 @@ The adapter reads configuration from multiple sources (highest priority first):

1. **Overrides** passed to `createPostHogDrain()`
2. **Runtime config** at `runtimeConfig.posthog` (Nuxt/Nitro only)
3. **Environment variables** (`POSTHOG_*` or `NUXT_POSTHOG_*`)
3. **Environment variables** (`POSTHOG_*`)

### Environment Variables

| Variable | Nuxt alias | Description |
|----------|------------|-------------|
| `POSTHOG_API_KEY` | `NUXT_POSTHOG_API_KEY` | Project API key (starts with `phc_`) |
| `POSTHOG_HOST` | `NUXT_POSTHOG_HOST` | PostHog host URL (for EU or self-hosted) |
| Variable | Description |
|----------|-------------|
| `POSTHOG_API_KEY` | Project API key (starts with `phc_`) |
| `POSTHOG_HOST` | PostHog host URL (for EU or self-hosted) |

### Runtime Config (Nuxt only)

Expand All @@ -145,8 +145,8 @@ Configure via `nuxt.config.ts` for type-safe configuration:
export default defineNuxtConfig({
runtimeConfig: {
posthog: {
apiKey: '', // Set via NUXT_POSTHOG_API_KEY
host: '', // Set via NUXT_POSTHOG_HOST
apiKey: '', // Set via POSTHOG_API_KEY
host: '', // Set via POSTHOG_HOST
},
},
})
Expand Down
14 changes: 7 additions & 7 deletions apps/docs/content/3.integrate/adapters/cloud/04.sentry.md
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Expand Up @@ -127,15 +127,15 @@ The adapter reads configuration from multiple sources (highest priority first):

1. **Overrides** passed to `createSentryDrain()`
2. **Runtime config** at `runtimeConfig.sentry` (Nuxt/Nitro only)
3. **Environment variables** (`SENTRY_*` or `NUXT_SENTRY_*`)
3. **Environment variables** (`SENTRY_*`)

### Environment Variables

| Variable | Nuxt alias | Description |
|----------|------------|-------------|
| `SENTRY_DSN` | `NUXT_SENTRY_DSN` | Sentry DSN (required) |
| `SENTRY_ENVIRONMENT` | `NUXT_SENTRY_ENVIRONMENT` | Environment name override |
| `SENTRY_RELEASE` | `NUXT_SENTRY_RELEASE` | Release version override |
| Variable | Description |
|----------|-------------|
| `SENTRY_DSN` | Sentry DSN (required) |
| `SENTRY_ENVIRONMENT` | Environment name override |
| `SENTRY_RELEASE` | Release version override |

### Runtime Config (Nuxt only)

Expand All @@ -146,7 +146,7 @@ export default defineNuxtConfig({
modules: ['evlog/nuxt'],
evlog: {
sentry: {
dsn: '', // Set via NUXT_SENTRY_DSN
dsn: '', // Set via SENTRY_DSN
environment: 'production',
release: '1.0.0',
},
Expand Down
16 changes: 8 additions & 8 deletions apps/docs/content/3.integrate/adapters/cloud/05.better-stack.md
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Expand Up @@ -67,7 +67,7 @@ BETTER_STACK_API_KEY=your-source-token-here
```

::callout{icon="i-lucide-info" color="info"}
In Better Stack's dashboard this credential is called a **source token**. evlog names the config field `apiKey` for consistency across adapters. Legacy `sourceToken` / `BETTER_STACK_SOURCE_TOKEN` still work until the next major release.
In Better Stack's dashboard this credential is called a **source token**. evlog names the config field `apiKey` for consistency across adapters. The legacy `sourceToken` field still works until the next major release.
::

### 3. Wire the drain to your framework
Expand Down Expand Up @@ -131,14 +131,14 @@ The adapter reads configuration from multiple sources (highest priority first):

1. **Overrides** passed to `createBetterStackDrain()`
2. **Runtime config** at `runtimeConfig.betterStack` (Nuxt/Nitro only)
3. **Environment variables** (`BETTER_STACK_*` or `NUXT_BETTER_STACK_*`)
3. **Environment variables** (`BETTER_STACK_*`)

### Environment Variables

| Variable | Nuxt alias | Description |
|----------|------------|-------------|
| `BETTER_STACK_API_KEY` | `NUXT_BETTER_STACK_API_KEY` | Better Stack source token (required) |
| `BETTER_STACK_ENDPOINT` | `NUXT_BETTER_STACK_ENDPOINT` | Custom ingestion endpoint |
| Variable | Description |
|----------|-------------|
| `BETTER_STACK_API_KEY` | Better Stack source token (required) |
| `BETTER_STACK_ENDPOINT` | Custom ingestion endpoint |

### Runtime Config (Nuxt only)

Expand All @@ -148,7 +148,7 @@ Configure via `nuxt.config.ts` for type-safe configuration:
export default defineNuxtConfig({
runtimeConfig: {
betterStack: {
apiKey: '', // Set via NUXT_BETTER_STACK_API_KEY
apiKey: '', // Set via BETTER_STACK_API_KEY
},
},
})
Expand Down Expand Up @@ -198,7 +198,7 @@ Better Stack provides a powerful log search interface:
### Missing apiKey error

```text [Console]
[evlog/better-stack] Missing apiKey. Set NUXT_BETTER_STACK_API_KEY env var or pass to createBetterStackDrain()
[evlog/better-stack] Missing apiKey. Set BETTER_STACK_API_KEY env var or pass to createBetterStackDrain()
```

Make sure your environment variable is set and the server was restarted after adding it.
Expand Down
16 changes: 8 additions & 8 deletions apps/docs/content/3.integrate/adapters/cloud/06.datadog.md
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Expand Up @@ -134,19 +134,19 @@ The adapter reads configuration from multiple sources (highest priority first):

### Environment Variables

| Variable | Nuxt alias | Description |
|----------|------------|-------------|
| `DD_API_KEY` | `NUXT_DATADOG_API_KEY` | Datadog API key (required). Also: `DATADOG_API_KEY` |
| `DD_SITE` | `NUXT_DATADOG_SITE` | Site hostname (e.g. `datadoghq.com`, `datadoghq.eu`, `us3.datadoghq.com`). Also: `DATADOG_SITE` |
| `DATADOG_LOGS_URL` | `NUXT_DATADOG_LOGS_URL` | Full intake URL — overrides URL derived from `site` |
| Variable | Description |
|----------|-------------|
| `DD_API_KEY` | Datadog API key (required). Also: `DATADOG_API_KEY` |
| `DD_SITE` | Site hostname (e.g. `datadoghq.com`, `datadoghq.eu`, `us3.datadoghq.com`). Also: `DATADOG_SITE` |
| `DATADOG_LOGS_URL` | Full intake URL — overrides URL derived from `site` |

### Runtime Config (Nuxt only)

```typescript [nuxt.config.ts]
export default defineNuxtConfig({
runtimeConfig: {
datadog: {
apiKey: '', // Set via NUXT_DATADOG_API_KEY or DD_API_KEY
apiKey: '', // Set via DD_API_KEY or DATADOG_API_KEY
site: 'datadoghq.eu',
},
},
Expand Down Expand Up @@ -202,7 +202,7 @@ Plain-text lines in Live Tail (e.g. “Form field is empty”) usually come from
### Missing API key

```text [Console]
[evlog/datadog] Missing API key. Set NUXT_DATADOG_API_KEY, DATADOG_API_KEY, or DD_API_KEY...
[evlog/datadog] Missing API key. Set DATADOG_API_KEY, DD_API_KEY...
```

Set `DD_API_KEY` (or unprefixed `DATADOG_API_KEY`) and restart the process.
Expand All @@ -213,7 +213,7 @@ The API key may lack log ingestion permission or belong to the wrong organizatio

### Wrong region / site

If logs never appear, confirm `DD_SITE` matches your Datadog account (e.g. EU: `datadoghq.eu`). For a custom intake URL, set `DATADOG_LOGS_URL` / `NUXT_DATADOG_LOGS_URL`.
If logs never appear, confirm `DD_SITE` matches your Datadog account (e.g. EU: `datadoghq.eu`). For a custom intake URL, set `DATADOG_LOGS_URL`.

## Direct API usage

Expand Down
22 changes: 9 additions & 13 deletions apps/docs/content/3.integrate/adapters/cloud/07.hyperdx.md
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Expand Up @@ -126,26 +126,22 @@ The adapter reads configuration from multiple sources (highest priority first):

1. **Overrides** passed to `createHyperDXDrain()`
2. **Runtime config** at `runtimeConfig.evlog.hyperdx` or `runtimeConfig.hyperdx` (Nuxt/Nitro only)
3. **Environment variables** (`HYPERDX_*` or `NUXT_HYPERDX_*`)
3. **Environment variables** (`HYPERDX_*`)

### Environment Variables

| Variable | Nuxt alias | Description |
|----------|------------|-------------|
| `HYPERDX_API_KEY` | `NUXT_HYPERDX_API_KEY` | Ingestion API key (sent as the `authorization` header) |
| `HYPERDX_OTLP_ENDPOINT` | `NUXT_HYPERDX_OTLP_ENDPOINT` | OTLP HTTP base URL (default: `https://in-otel.hyperdx.io`) |
| `HYPERDX_SERVICE_NAME` | `NUXT_HYPERDX_SERVICE_NAME` | Override `service.name` |
| Variable | Description |
|----------|-------------|
| `HYPERDX_API_KEY` | Ingestion API key (sent as the `authorization` header) |
| `HYPERDX_OTLP_ENDPOINT` | OTLP HTTP base URL (default: `https://in-otel.hyperdx.io`) |
| `HYPERDX_SERVICE_NAME` | Override `service.name` |

The following variable is also read when resolving `serviceName` (same as the OTLP adapter):

| Variable | Description |
|----------|-------------|
| `OTEL_SERVICE_NAME` | Fallback for service name (HyperDX SDK examples use this) |

::callout{icon="i-lucide-info" color="info"}
In Nuxt/Nitro, use the `NUXT_` prefix so values are available via `useRuntimeConfig()`. In all other frameworks, use the unprefixed variables.
::

### Runtime Config (Nuxt only)

Configure via `nuxt.config.ts` for type-safe configuration:
Expand All @@ -154,8 +150,8 @@ Configure via `nuxt.config.ts` for type-safe configuration:
export default defineNuxtConfig({
runtimeConfig: {
hyperdx: {
apiKey: '', // Set via NUXT_HYPERDX_API_KEY
// endpoint: '', // Set via NUXT_HYPERDX_OTLP_ENDPOINT
apiKey: '', // Set via HYPERDX_API_KEY
// endpoint: '', // Set via HYPERDX_OTLP_ENDPOINT
},
},
})
Expand Down Expand Up @@ -236,7 +232,7 @@ Use the HyperDX UI to search and explore wide events:
### Missing apiKey error

```text [Console]
[evlog/hyperdx] Missing apiKey. Set HYPERDX_API_KEY or NUXT_HYPERDX_API_KEY, or pass to createHyperDXDrain()
[evlog/hyperdx] Missing apiKey. Set HYPERDX_API_KEY, or pass to createHyperDXDrain()
```

Make sure your environment variables are set and the server was restarted after adding them.
Expand Down
8 changes: 4 additions & 4 deletions apps/docs/content/3.integrate/adapters/self-hosted/03.memory.md
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Expand Up @@ -158,10 +158,10 @@ createMemoryDrain({ store: 'my-service' })

### Environment Variables

| Variable | Nuxt alias | Description |
|----------|------------|-------------|
| `EVLOG_MEMORY_STORE` | `NUXT_EVLOG_MEMORY_STORE` | Named buffer key (default: `'default'`) |
| `EVLOG_MEMORY_MAX_EVENTS` | `NUXT_EVLOG_MEMORY_MAX_EVENTS` | Ring buffer size (default: `1000`) |
| Variable | Description |
|----------|-------------|
| `EVLOG_MEMORY_STORE` | Named buffer key (default: `'default'`) |
| `EVLOG_MEMORY_MAX_EVENTS` | Ring buffer size (default: `1000`) |

Configuration priority matches other adapters: overrides → `runtimeConfig.evlog.memory` → env vars.

Expand Down
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