Roadmap

LogQL -> LogsQL translation (stream selectors, line filters, parsers, metric queries)

Response format conversion (VL NDJSON -> Loki streams, VL stats -> Prometheus matrix/vector)

Request coalescing (singleflight: N queries -> 1 backend request)

Rate limiting (per-client token bucket + global concurrency)

Circuit breaker (closed->open->half-open with built-in defaults)

Query normalization (sort matchers, collapse whitespace for cache keys)

Tiered cache (per-endpoint TTLs, L1 in-memory, L2 bbolt on-disk)

Multitenancy (string->int tenant mapping, numeric passthrough, SIGHUP reload)

WebSocket tail (/loki/api/v1/tail -> VL NDJSON streaming)

L2 disk cache with gzip compression, write-back buffer (encryption via cloud provider)

OTLP telemetry push (gzip/zstd compression, TLS)

HTTP hardening (timeouts, body limits, security headers)

Index stats, volume, volume_range via VL /select/logsql/hits

Query fingerprinting + analytics (/debug/queries)

Graceful HTTP server shutdown (SIGTERM/SIGINT)

Grafana datasource config (maxLines, basic auth, backend timeout, TLS, header/cookie forwarding, optional listener mTLS)

Derived fields (regex extraction for trace linking)

Chunked streaming (Transfer-Encoding: chunked for large results)

OTel label translation (bidirectional dot<->underscore for 50+ fields)

Custom field remapping (-field-mapping)

Per-tenant metrics (request rate, latency, error rate by X-Scope-OrgID)

Client error breakdown (bad_request, rate_limited, not_found, body_too_large)

Grafana dashboard & alerting rules (Helm PrometheusRule CR)

Write safeguard (/push blocked with 405)

| decolorize proxy-side ANSI stripping

| ip("CIDR") proxy-side IP range filtering

| line_format full Go templates

pprof, SIGHUP reload, and rate-limit response headers

Per-endpoint cache/backend metrics, CB state gauge

Fuzz testing (1.2M+ executions, no panics)

Nested binary metric queries (sum(rate(...)) / sum(rate(...)))

/loki/api/v1/patterns proxy-side Loki-style Drain tokenizer/clustering extraction

direction parameter (forward/backward sort)

quantile_over_time() mapped to VL quantile

label_format multi-rename (comma-separated)

Extended binary ops (%, ^, ==, !=, >, <, >=, <=)

Datasource compatibility handlers (/rules, /alerts, /config)

Playwright UI e2e tests

/tail browser and ops coverage (origin policy, native fallback, ingress recovery, upstream 401/403/5xx parity)

Multi-tenant Explore and Logs Drilldown coverage for __tenant_id__, labels, series, and detected field/label browser/resource surfaces

Delete API endpoint with safeguards (confirmation, tenant scoping, audit logging)

without() clause detection and clear error message

IsScalar supports negative and scientific notation

Circuit breaker half-open metrics fix

Tenant map reload race condition fix

bool modifier on comparison operators — stripped at translation (applyOp returns 1/0 for all comparisons)

Field-specific parser | json field1, field2 / | logfmt field1, field2 — maps to full unpack (VL extracts all fields)

Backslash-escaped quotes in stream selectors — findMatchingBrace handles \"

Binary expression detection before metric query (fixes rate(...) > 0 being misrouted)

Peer cache design doc + headless service Helm template

Performance-focused optimization pass (buffer pools, sync.Pool, connection-pool tuning, cache hot-path benchmarks)

Complete Helm chart: 11 templates, GOMEMLIMIT auto-calc, HTTPRoute

Broad test suite, CI bench job, and regression gates

Coverage and quality-gate reinforcement for runtime, middleware, cache, and proxy-path tests

Tier0 compatibility-edge cache with bounded memory budget, safe GET-only guardrails, and reload invalidation

Fleet shadow-copy validation for 3-peer cache reuse plus Tier0/fleet micro-benchmarks

Completed

Planned

Completed​

Planned​

Completed

Planned