$ show parca-dev/parca

[account ↗] [repo ↗] APPLICATION ★ 4995 266 ● active (last update 2 weeks ago)

── AI DEEP ANALYSIS ──

reviewed by: deepseek/deepseek-v4-flash

Parca is a continuous profiling platform that collects, stores, queries, and visualizes pprof profiles in real time. The Go backend ingests profiles via gRPC (both pprof and OpenTelemetry OTLP), normalizes them into Apache Arrow columnar format, and stores them in either FrostDB (default) or ClickHouse. It provides a rich gRPC+JSON API for querying profiles (flamegraph, table, source view, callgraph, pprof download), scraping Prometheus-style targets, managing debug information for symbolization, and sharing profiles via links. The TypeScript/React frontend delivers an interactive profiling UI with flamegraphs, tables, source views, metrics graphs, sandwich views, and comparison mode, all backed by efficient Arrow-based querying. The codebase demonstrates strong engineering with reusable patterns (generic caching, signed request abstraction, Arrow compaction), but carries some drift risk from dual storage backends, generated protobuf code, and a complex UI state layer built with multiple state management strategies.

── METRICS ──

RATING8.3/10

QUALITY7.8/10

MAINTENANCEactive

DRIFTmedium

CONTRIBUTORS81

VELOCITY0.80

OPEN ISSUES215

CLOSED ISSUES341

LAST COMMIT2 weeks ago

── TAGS ──

#continuous-profiling #golang #react #flamegraph #pprof #columnar-storage #grpc #observability #profiling #profiles #prometheus #kubernetes #containers #performance #c #cpp #python #ruby #rust #php #javascript #bpf #ebpf #ebpf-programs

── GITHUB TOPICS ──

── DEPENDENCY GRAPH ──

@typescript-eslint/eslint-plugin (npm) 5.62.0

@typescript-eslint/parser (npm) 5.62.0

all-contributors-cli (npm) 6.26.1

ts-protoc-gen (npm) 0.15.0

cloud.google.com/go/compute/metadata (go) v0.9.0

cloud.google.com/go/storage (go) v1.61.3

github.com/ClickHouse/clickhouse-go/v2 (go) v2.43.0

github.com/alecthomas/kong (go) v0.9.0

github.com/apache/arrow-go/v18 (go) v18.5.2

github.com/cenkalti/backoff/v4 (go) v4.3.0

github.com/cespare/xxhash/v2 (go) v2.3.0

github.com/common-nighthawk/go-figure (go) v0.0.0-20210622060536-734e95fb86be

github.com/dennwc/varint (go) v1.0.0

github.com/dgraph-io/badger/v4 (go) v4.9.1

github.com/felixge/fgprof (go) v0.9.5

github.com/fsnotify/fsnotify (go) v1.9.0

github.com/go-chi/chi/v5 (go) v5.2.5

github.com/go-chi/cors (go) v1.2.2

github.com/go-delve/delve (go) v1.26.1

github.com/go-kit/log (go) v0.2.1

github.com/go-ozzo/ozzo-validation/v4 (go) v4.3.0

github.com/gogo/status (go) v1.1.1

github.com/google/pprof (go) v0.0.0-20251114195745-4902fdda35c8

github.com/google/uuid (go) v1.6.0

github.com/grpc-ecosystem/go-grpc-middleware/providers/prometheus (go) v1.1.0

github.com/grpc-ecosystem/go-grpc-middleware/v2 (go) v2.3.3

github.com/grpc-ecosystem/grpc-gateway/v2 (go) v2.29.0

github.com/ianlancetaylor/demangle (go) v0.0.0-20250628045327-2d64ad6b7ec5

github.com/improbable-eng/grpc-web (go) v0.15.0

github.com/klauspost/compress (go) v1.18.5

github.com/m1gwings/treedrawer (go) v0.3.3-beta

github.com/minio/minio-go/v7 (go) v7.0.72

github.com/nanmu42/limitio (go) v1.0.0

github.com/oklog/run (go) v1.2.0

github.com/olekukonko/tablewriter (go) v0.0.5

github.com/parquet-go/parquet-go (go) v0.24.0

github.com/planetscale/vtprotobuf (go) v0.6.1-0.20250313105119-ba97887b0a25

github.com/polarsignals/frostdb (go) v0.0.0-20260121113628-9e5cfe0171ad

github.com/polarsignals/iceberg-go (go) v0.0.0-20240502213135-2ee70b71e76b

github.com/prometheus/client_golang (go) v1.23.2

github.com/prometheus/common (go) v0.67.5

github.com/prometheus/prometheus (go) v0.305.0

github.com/stretchr/testify (go) v1.11.1

github.com/thanos-io/objstore (go) v0.0.0-20241028145108-31c0873d5266

github.com/zeebo/xxh3 (go) v1.1.0

go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc (go) v0.67.0

go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace (go) v0.67.0

go.opentelemetry.io/otel (go) v1.43.0

go.opentelemetry.io/otel/exporters/otlp/otlptrace (go) v1.43.0

go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc (go) v1.42.0

go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp (go) v1.43.0

go.opentelemetry.io/otel/exporters/stdout/stdouttrace (go) v1.42.0

go.opentelemetry.io/otel/sdk (go) v1.43.0

go.opentelemetry.io/otel/trace (go) v1.43.0

go.opentelemetry.io/proto/otlp (go) v1.10.0

go.opentelemetry.io/proto/otlp/collector/profiles/v1development (go) v0.3.0

go.opentelemetry.io/proto/otlp/profiles/v1development (go) v0.3.0

go.uber.org/atomic (go) v1.11.0

go.uber.org/automaxprocs (go) v1.6.0

golang.org/x/exp (go) v0.0.0-20260112195511-716be5621a96

golang.org/x/net (go) v0.55.0

golang.org/x/oauth2 (go) v0.36.0

golang.org/x/sync (go) v0.20.0

google.golang.org/api (go) v0.276.0

google.golang.org/genproto/googleapis/api (go) v0.0.0-20260414002931-afd174a4e478

google.golang.org/grpc (go) v1.82.1

google.golang.org/protobuf (go) v1.36.11

gopkg.in/dnaeon/go-vcr.v3 (go) v3.2.2

gopkg.in/yaml.v3 (go) v3.0.1

cel.dev/expr (go) v0.25.1

cloud.google.com/go (go) v0.123.0

cloud.google.com/go/auth (go) v0.20.0

cloud.google.com/go/auth/oauth2adapt (go) v0.2.8

cloud.google.com/go/iam (go) v1.5.3

cloud.google.com/go/monitoring (go) v1.24.3

github.com/Azure/azure-sdk-for-go/sdk/azcore (go) v1.18.0

github.com/Azure/azure-sdk-for-go/sdk/azidentity (go) v1.10.1

github.com/Azure/azure-sdk-for-go/sdk/internal (go) v1.11.1

github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v5 (go) v5.7.0

github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/network/armnetwork/v4 (go) v4.3.0

github.com/Azure/azure-sdk-for-go/sdk/storage/azblob (go) v1.3.0

github.com/AzureAD/microsoft-authentication-library-for-go (go) v1.4.2

github.com/ClickHouse/ch-go (go) v0.71.0

github.com/Code-Hex/go-generics-cache (go) v1.5.1

github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp (go) v1.32.0

github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric (go) v0.55.0

github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping (go) v0.55.0

github.com/Microsoft/go-winio (go) v0.6.2

github.com/RoaringBitmap/roaring (go) v1.9.4

github.com/aliyun/aliyun-oss-go-sdk (go) v2.2.2+incompatible

github.com/andybalholm/brotli (go) v1.2.0

github.com/apache/thrift (go) v0.22.0

github.com/armon/go-metrics (go) v0.4.1

github.com/aws/aws-sdk-go (go) v1.55.7

github.com/aws/aws-sdk-go-v2 (go) v1.36.3

github.com/aws/aws-sdk-go-v2/config (go) v1.29.14

github.com/aws/aws-sdk-go-v2/credentials (go) v1.17.67

github.com/aws/aws-sdk-go-v2/feature/ec2/imds (go) v1.16.30

github.com/aws/aws-sdk-go-v2/internal/configsources (go) v1.3.34

github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 (go) v2.6.34

── FILE BREAKDOWN ──

Files by Type (count)

TSX

174

165

TypeScript

111

JSON

YAML

Other (no ext)

Markdown

Other (.gz)

Other (.svg)

JavaScript

Shell

Protocol Buffers

Files by Type (size)

JSON

85MB

YAML

17MB

Other (no ext)

8MB

2MB

TypeScript

1MB

Other (.png)

1MB

TSX

814KB

Markdown

590KB

Other (.gz)

488KB

Other (.woff2)

298KB

Other (.sum)

123KB

Protocol Buffers

65KB

── KEY FINDINGS: REUSABLE CODE ──

The LLM identified 4 files worth highlighting for reuse:

Provides a family of generic caching implementations (TTL, eviction, loading with singleflight) built on top of an LRU. The interfaces are clean, the eviction callback and metrics are wired without coupling to any specific use case. This could be extracted and reused in any Go service needing a performant, observable cache.

file: pkg/cache/cache.go ↗ | tags: #generic-cache #ttl #eviction-callbacks #metrics

Defines an abstract client for generating signed URLs for object storage (GCS, S3). The pattern separates the signing logic from the transport, making it easy to add new storage backends. The implementations (gcs.go, s3.go) are self-contained and could be reused in any project that needs presigned URL uploads.

file: pkg/signedrequests/client.go ↗ | tags: #cloud-storage #signed-urls #abstract-client

Implements a compact dictionary for Arrow arrays that deduplicates stacktrace strings across record batches. This is a non-obvious optimization specific to Arrow's dictionary encoding and is fully isolated from the rest of the profiling logic. It can be extracted for any Arrow-based pipeline needing reduced memory footprint for repeated strings.

file: pkg/compactdictionary/compactdictionary.go ↗ | tags: #apache-arrow #dictionary-compaction #memory-optimization

A fully featured, generalized table component using @tanstack/react-table with virtual scrolling, column visibility, sorting, row expansion, color cells, and context menu. Designed with composability in mind and no coupling to profile data; can be extracted and used in any React project requiring a high-performance, customizable table.

file: ui/packages/shared/components/src/Table/index.tsx ↗ | tags: #react-table #virtual-scrolling #context-menu #reusable-ui

── HISTORY ──

Last analyzed: 2026-09-01 10:19:16.343903

Next check: 2026-10-17 14:31:47.070847