# salesforce_cdc

> For the complete documentation index, see [llms.txt](https://docs.redpanda.com/llms.txt). Component-specific: [cloud-data-platform-full.txt](https://docs.redpanda.com/cloud-data-platform-full.txt)

---
title: salesforce_cdc
latest-operator-version: v26.1.4
latest-console-tag: v3.7.3
latest-connect-version: 4.93.0
latest-redpanda-tag: v26.1.9
docname: connect/components/inputs/salesforce_cdc
page-component-name: cloud-data-platform
page-version: master
page-component-version: master
page-component-title: Cloud
page-relative-src-path: connect/components/inputs/salesforce_cdc.adoc
page-edit-url: https://github.com/redpanda-data/cloud-docs/edit/main/modules/develop/pages/connect/components/inputs/salesforce_cdc.adoc
page-git-created-date: "2026-05-26"
page-git-modified-date: "2026-05-26"
---

<!-- Source: https://docs.redpanda.com/cloud-data-platform/develop/connect/components/inputs/salesforce_cdc.md -->

**Available in:** Cloud, [Self-Managed](https://docs.redpanda.com/connect/components/inputs/salesforce_cdc/%20%22View%20the%20Self-Managed%20version%20of%20this%20component%22)

Subscribes to one or more Salesforce Pub/Sub topics in parallel and emits a message per event. Topics may be:

-   `/data/<sObject>ChangeEvent` — per-sObject CDC channel.

-   `/data/ChangeEvents` — CDC firehose (every CDC-enabled sObject).

-   `/event/<EventName>__e` — custom Platform Event.

-   `/event/<StandardEventName>` — standard Platform Event (e.g. `LoginEventStream`).

-   A bare sObject name (e.g. `Account`) is shorthand for `/data/AccountChangeEvent`.


Optionally runs a REST snapshot for the CDC sObjects before opening the streaming subscriptions, so the pipeline sees the current state plus continuous changes. Per-topic replay state persists in a cache resource so each subscription resumes across restarts independently.

## [](#when-to-use-this-input)When to use this input

Use `salesforce_cdc` for:

-   Continuous ingestion with both historical state (snapshot) and live changes (CDC).

-   Real-time custom or standard Platform Events.

-   Mixed CDC + Platform Event pipelines under a single component.


Use a different Salesforce input instead if:

-   You only need a one-off extract or periodic SOQL query — use [`salesforce`](https://docs.redpanda.com/cloud-data-platform/develop/connect/components/processors/salesforce/).

-   You need a GraphQL query (cross-object in one request) — use [`salesforce_graphql`](https://docs.redpanda.com/cloud-data-platform/develop/connect/components/inputs/salesforce_graphql/).


### Common

```yml
inputs:
  label: ""
  salesforce_cdc:
    org_url: "" # No default (required)
    client_id: "" # No default (required)
    client_secret: "" # No default (required)
    api_version: v65.0
    topics: [] # No default (required)
    stream_snapshot: true
    replay_preset: latest
    snapshot_max_batch_size: 2000
    stream_batch_size: 100
    max_parallel_snapshot_objects: 1
    checkpoint_cache: "" # No default (required)
    checkpoint_cache_key: salesforce_cdc
    checkpoint_limit: 1024
    auto_replay_nacks: true
    batching:
      count: 0
      byte_size: 0
      period: ""
      check: ""
      processors: [] # No default (optional)
```

### Advanced

```yml
inputs:
  label: ""
  salesforce_cdc:
    org_url: "" # No default (required)
    client_id: "" # No default (required)
    client_secret: "" # No default (required)
    api_version: v65.0
    topics: [] # No default (required)
    stream_snapshot: true
    replay_preset: latest
    snapshot_max_batch_size: 2000
    stream_batch_size: 100
    max_parallel_snapshot_objects: 1
    checkpoint_cache: "" # No default (required)
    checkpoint_cache_key: salesforce_cdc
    checkpoint_limit: 1024
    auto_replay_nacks: true
    grpc:
      reconnect_base_delay: 500ms
      reconnect_max_delay: 30s
      reconnect_max_attempts: 0
      shutdown_timeout: 10s
      buffer_size: 1000
    http:
      timeout: 5s
      tls:
        enabled: false
        skip_cert_verify: false
        enable_renegotiation: false
        root_cas: ""
        root_cas_file: ""
        client_certs: []
      proxy_url: ""
      disable_http2: false
      tps_limit: 0
      tps_burst: 1
      backoff:
        initial_interval: 1s
        max_interval: 30s
        max_retries: 3
      tcp:
        connect_timeout: 0s
        keep_alive:
          idle: 15s
          interval: 15s
          count: 9
        tcp_user_timeout: 0s
      http:
        max_idle_conns: 100
        max_idle_conns_per_host: 0
        max_conns_per_host: 64
        idle_conn_timeout: 1m30s
        tls_handshake_timeout: 10s
        expect_continue_timeout: 1s
        response_header_timeout: 0s
        disable_keep_alives: false
        disable_compression: false
        max_response_header_bytes: 1048576
        max_response_body_bytes: 10485760
        write_buffer_size: 4096
        read_buffer_size: 4096
        h2:
          strict_max_concurrent_requests: false
          max_decoder_header_table_size: 4096
          max_encoder_header_table_size: 4096
          max_read_frame_size: 16384
          max_receive_buffer_per_connection: 1048576
          max_receive_buffer_per_stream: 1048576
          send_ping_timeout: 0s
          ping_timeout: 15s
          write_byte_timeout: 0s
      access_log_level: ""
      access_log_body_limit: 0
    batching:
      count: 0
      byte_size: 0
      period: ""
      check: ""
      processors: [] # No default (optional)
```

## [](#fields)Fields

### [](#api_version)`api_version`

Salesforce REST API version to target, prefixed with `v`. Affects endpoint paths (`/services/data/{api_version}/…​`) and available fields/objects. Must be supported by your org — check Setup → Company Information. Older versions may lack recent fields.

**Type**: `string`

**Default**: `v65.0`

```yaml
# Examples:
api_version: v65.0

# ---

api_version: v62.0
```

### [](#auto_replay_nacks)`auto_replay_nacks`

Whether messages that are rejected (nacked) at the output level should be automatically replayed indefinitely, eventually resulting in back pressure if the cause of the rejections is persistent. If set to `false` these messages will instead be deleted. Disabling auto replays can greatly improve memory efficiency of high throughput streams as the original shape of the data can be discarded immediately upon consumption and mutation.

**Type**: `bool`

**Default**: `true`

### [](#batching)`batching`

Allows you to configure a [batching policy](https://docs.redpanda.com/cloud-data-platform/develop/connect/configuration/batching/).

**Type**: `object`

```yaml
# Examples:
batching:
  byte_size: 5000
  count: 0
  period: 1s

# ---

batching:
  count: 10
  period: 1s

# ---

batching:
  check: this.contains("END BATCH")
  count: 0
  period: 1m
```

### [](#batching-byte_size)`batching.byte_size`

An amount of bytes at which the batch should be flushed. If `0` disables size based batching.

**Type**: `int`

**Default**: `0`

### [](#batching-check)`batching.check`

A [Bloblang query](https://docs.redpanda.com/cloud-data-platform/develop/connect/guides/bloblang/about/) that should return a boolean value indicating whether a message should end a batch.

**Type**: `string`

**Default**: `""`

```yaml
# Examples:
check: this.type == "end_of_transaction"
```

### [](#batching-count)`batching.count`

A number of messages at which the batch should be flushed. If `0` disables count based batching.

**Type**: `int`

**Default**: `0`

### [](#batching-period)`batching.period`

A period in which an incomplete batch should be flushed regardless of its size.

**Type**: `string`

**Default**: `""`

```yaml
# Examples:
period: 1s

# ---

period: 1m

# ---

period: 500ms
```

### [](#batching-processors)`batching.processors[]`

A list of [processors](https://docs.redpanda.com/cloud-data-platform/develop/connect/components/processors/about/) to apply to a batch as it is flushed. This allows you to aggregate and archive the batch however you see fit. Please note that all resulting messages are flushed as a single batch, therefore splitting the batch into smaller batches using these processors is a no-op.

**Type**: `processor`

```yaml
# Examples:
processors:
  - archive:
      format: concatenate

# ---

processors:
  - archive:
      format: lines

# ---

processors:
  - archive:
      format: json_array
```

### [](#checkpoint_cache)`checkpoint_cache`

Name of the cache resource used to persist snapshot cursor and per-topic replay IDs across restarts. The cache must be declared under the top-level `cache_resources` block. Choose a durable cache (Redis, Postgres, DynamoDB) for production; in-memory caches lose checkpoints on restart.

**Type**: `string`

```yaml
# Examples:
checkpoint_cache: persistent_cache
```

### [](#checkpoint_cache_key)`checkpoint_cache_key`

Key inside the checkpoint cache where this input’s state is stored. Change when running multiple `salesforce_cdc` inputs against the same cache resource to avoid collisions.

**Type**: `string`

**Default**: `salesforce_cdc`

### [](#checkpoint_limit)`checkpoint_limit`

Maximum number of unacknowledged batches in flight (per topic) before that topic pauses reading. Prevents unbounded memory growth when downstream components stall. Higher values increase throughput in steady state; lower values bound memory under backpressure.

**Type**: `int`

**Default**: `1024`

### [](#client_id)`client_id`

Consumer Key of the Salesforce Connected App authorized for the OAuth Client Credentials flow. Create the Connected App under Setup → App Manager → New Connected App, enable OAuth settings, enable the Client Credentials Flow under `Flow Enablement`, then copy the Consumer Key from `Manage Consumer Details`.

**Type**: `string`

### [](#client_secret)`client_secret`

Consumer Secret of the Salesforce Connected App, paired with `client_id`. Sensitive — prefer environment variable interpolation (`${SALESFORCE_CLIENT_SECRET}`) over inlining.

> ⚠️ **CAUTION**
>
> This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see [Manage Secrets](https://docs.redpanda.com/cloud-data-platform/develop/connect/configuration/secret-management/) before adding it to your configuration.

**Type**: `string`

### [](#grpc)`grpc`

gRPC transport tuning for the Pub/Sub API connection.

**Type**: `object`

### [](#grpc-buffer_size)`grpc.buffer_size`

Size of the internal gRPC event receive buffer.

**Type**: `int`

**Default**: `1000`

### [](#grpc-reconnect_base_delay)`grpc.reconnect_base_delay`

Base delay for gRPC reconnection backoff.

**Type**: `string`

**Default**: `500ms`

### [](#grpc-reconnect_max_attempts)`grpc.reconnect_max_attempts`

Maximum number of gRPC reconnection attempts. 0 means unlimited.

**Type**: `int`

**Default**: `0`

### [](#grpc-reconnect_max_delay)`grpc.reconnect_max_delay`

Maximum delay for gRPC reconnection backoff.

**Type**: `string`

**Default**: `30s`

### [](#grpc-shutdown_timeout)`grpc.shutdown_timeout`

Timeout for graceful gRPC client shutdown.

**Type**: `string`

**Default**: `10s`

### [](#http)`http`

HTTP client configuration for Salesforce REST calls (OAuth token endpoint and, where applicable, data queries).

**Type**: `object`

### [](#http-access_log_body_limit)`http.access_log_body_limit`

Maximum bytes of request/response body to include in logs. 0 to skip body logging.

**Type**: `int`

**Default**: `0`

### [](#http-access_log_level)`http.access_log_level`

Log level for HTTP request/response logging. Empty disables logging.

**Type**: `string`

**Default**: `""`

**Options**: `` `, `TRACE ``, `DEBUG`, `INFO`, `WARN`, `ERROR`

### [](#http-backoff)`http.backoff`

Adaptive backoff configuration for 429 (Too Many Requests) responses. Always active.

**Type**: `object`

### [](#http-backoff-initial_interval)`http.backoff.initial_interval`

Initial interval between retries on 429 responses.

**Type**: `string`

**Default**: `1s`

### [](#http-backoff-max_interval)`http.backoff.max_interval`

Maximum interval between retries on 429 responses.

**Type**: `string`

**Default**: `30s`

### [](#http-backoff-max_retries)`http.backoff.max_retries`

Maximum number of retries on 429 responses.

**Type**: `int`

**Default**: `3`

### [](#http-disable_http2)`http.disable_http2`

Disable HTTP/2 and force HTTP/1.1.

**Type**: `bool`

**Default**: `false`

### [](#http-http)`http.http`

HTTP transport settings controlling connection pooling, timeouts, and HTTP/2.

**Type**: `object`

### [](#http-http-disable_compression)`http.http.disable_compression`

Disable automatic decompression of gzip responses.

**Type**: `bool`

**Default**: `false`

### [](#http-http-disable_keep_alives)`http.http.disable_keep_alives`

Disable HTTP keep-alive connections; each request uses a new connection.

**Type**: `bool`

**Default**: `false`

### [](#http-http-expect_continue_timeout)`http.http.expect_continue_timeout`

Maximum time to wait for a server’s 100-continue response before sending the body. 0 means the body is sent immediately.

**Type**: `string`

**Default**: `1s`

### [](#http-http-h2)`http.http.h2`

HTTP/2-specific transport settings. Only applied when HTTP/2 is enabled.

**Type**: `object`

### [](#http-http-h2-max_decoder_header_table_size)`http.http.h2.max_decoder_header_table_size`

Upper limit in bytes for the HPACK header table used to decode headers from the peer. Must be less than 4 MiB.

**Type**: `int`

**Default**: `4096`

### [](#http-http-h2-max_encoder_header_table_size)`http.http.h2.max_encoder_header_table_size`

Upper limit in bytes for the HPACK header table used to encode headers sent to the peer. Must be less than 4 MiB.

**Type**: `int`

**Default**: `4096`

### [](#http-http-h2-max_read_frame_size)`http.http.h2.max_read_frame_size`

Largest HTTP/2 frame this endpoint will read. Valid range: 16 KiB to 16 MiB.

**Type**: `int`

**Default**: `16384`

### [](#http-http-h2-max_receive_buffer_per_connection)`http.http.h2.max_receive_buffer_per_connection`

Maximum flow-control window size in bytes for data received on a connection. Must be at least 64 KiB and less than 4 MiB.

**Type**: `int`

**Default**: `1048576`

### [](#http-http-h2-max_receive_buffer_per_stream)`http.http.h2.max_receive_buffer_per_stream`

Maximum flow-control window size in bytes for data received on a single stream. Must be less than 4 MiB.

**Type**: `int`

**Default**: `1048576`

### [](#http-http-h2-ping_timeout)`http.http.h2.ping_timeout`

Timeout waiting for a PING response before closing the connection.

**Type**: `string`

**Default**: `15s`

### [](#http-http-h2-send_ping_timeout)`http.http.h2.send_ping_timeout`

Idle timeout after which a PING frame is sent to verify connection health. 0 disables health checks.

**Type**: `string`

**Default**: `0s`

### [](#http-http-h2-strict_max_concurrent_requests)`http.http.h2.strict_max_concurrent_requests`

When true, new requests block when a connection’s concurrency limit is reached instead of opening a new connection.

**Type**: `bool`

**Default**: `false`

### [](#http-http-h2-write_byte_timeout)`http.http.h2.write_byte_timeout`

Timeout for writing data to a connection. The timer resets whenever bytes are written. 0 disables the timeout.

**Type**: `string`

**Default**: `0s`

### [](#http-http-idle_conn_timeout)`http.http.idle_conn_timeout`

How long an idle connection remains in the pool before being closed. 0 disables the timeout.

**Type**: `string`

**Default**: `1m30s`

### [](#http-http-max_conns_per_host)`http.http.max_conns_per_host`

Maximum total connections (active + idle) per host. 0 means unlimited.

**Type**: `int`

**Default**: `64`

### [](#http-http-max_idle_conns)`http.http.max_idle_conns`

Maximum total number of idle (keep-alive) connections across all hosts. 0 means unlimited.

**Type**: `int`

**Default**: `100`

### [](#http-http-max_idle_conns_per_host)`http.http.max_idle_conns_per_host`

Maximum idle connections to keep per host. 0 (the default) uses GOMAXPROCS+1.

**Type**: `int`

**Default**: `0`

### [](#http-http-max_response_body_bytes)`http.http.max_response_body_bytes`

Maximum bytes of response body the client will read. The response body is wrapped with a limit reader; reads beyond this cap return EOF. 0 disables the limit.

**Type**: `int`

**Default**: `10485760`

### [](#http-http-max_response_header_bytes)`http.http.max_response_header_bytes`

Maximum bytes of response headers to allow.

**Type**: `int`

**Default**: `1048576`

### [](#http-http-read_buffer_size)`http.http.read_buffer_size`

Size in bytes of the per-connection read buffer.

**Type**: `int`

**Default**: `4096`

### [](#http-http-response_header_timeout)`http.http.response_header_timeout`

Maximum time to wait for response headers after writing the full request. 0 disables the timeout.

**Type**: `string`

**Default**: `0s`

### [](#http-http-tls_handshake_timeout)`http.http.tls_handshake_timeout`

Maximum time to wait for a TLS handshake to complete. 0 disables the timeout.

**Type**: `string`

**Default**: `10s`

### [](#http-http-write_buffer_size)`http.http.write_buffer_size`

Size in bytes of the per-connection write buffer.

**Type**: `int`

**Default**: `4096`

### [](#http-proxy_url)`http.proxy_url`

HTTP proxy URL. Empty string disables proxying.

**Type**: `string`

**Default**: `""`

### [](#http-tcp)`http.tcp`

TCP socket configuration.

**Type**: `object`

### [](#http-tcp-connect_timeout)`http.tcp.connect_timeout`

Maximum amount of time a dial will wait for a connect to complete. Zero disables.

**Type**: `string`

**Default**: `0s`

### [](#http-tcp-keep_alive)`http.tcp.keep_alive`

TCP keep-alive probe configuration.

**Type**: `object`

### [](#http-tcp-keep_alive-count)`http.tcp.keep_alive.count`

Maximum unanswered keep-alive probes before dropping the connection. Zero defaults to 9.

**Type**: `int`

**Default**: `9`

### [](#http-tcp-keep_alive-idle)`http.tcp.keep_alive.idle`

Duration the connection must be idle before sending the first keep-alive probe. Zero defaults to 15s. Negative values disable keep-alive probes.

**Type**: `string`

**Default**: `15s`

### [](#http-tcp-keep_alive-interval)`http.tcp.keep_alive.interval`

Duration between keep-alive probes. Zero defaults to 15s.

**Type**: `string`

**Default**: `15s`

### [](#http-tcp-tcp_user_timeout)`http.tcp.tcp_user_timeout`

Maximum time to wait for acknowledgment of transmitted data before killing the connection. Linux-only (kernel 2.6.37+), ignored on other platforms. When enabled, keep\_alive.idle must be greater than this value per RFC 5482. Zero disables.

**Type**: `string`

**Default**: `0s`

### [](#http-timeout)`http.timeout`

HTTP request timeout.

**Type**: `string`

**Default**: `5s`

### [](#http-tls)`http.tls`

Custom TLS settings can be used to override system defaults.

**Type**: `object`

### [](#http-tls-client_certs)`http.tls.client_certs[]`

A list of client certificates to use. For each certificate either the fields `cert` and `key`, or `cert_file` and `key_file` should be specified, but not both.

**Type**: `object`

**Default**: `[]`

```yaml
# Examples:
client_certs:
  - cert: foo
    key: bar

# ---

client_certs:
  - cert_file: ./example.pem
    key_file: ./example.key
```

### [](#http-tls-client_certs-cert)`http.tls.client_certs[].cert`

A plain text certificate to use.

**Type**: `string`

**Default**: `""`

### [](#http-tls-client_certs-cert_file)`http.tls.client_certs[].cert_file`

The path of a certificate to use.

**Type**: `string`

**Default**: `""`

### [](#http-tls-client_certs-key)`http.tls.client_certs[].key`

A plain text certificate key to use.

> ⚠️ **CAUTION**
>
> This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see [Manage Secrets](https://docs.redpanda.com/cloud-data-platform/develop/connect/configuration/secret-management/) before adding it to your configuration.

**Type**: `string`

**Default**: `""`

### [](#http-tls-client_certs-key_file)`http.tls.client_certs[].key_file`

The path of a certificate key to use.

**Type**: `string`

**Default**: `""`

### [](#http-tls-client_certs-password)`http.tls.client_certs[].password`

A plain text password for when the private key is password encrypted in PKCS#1 or PKCS#8 format. The obsolete `pbeWithMD5AndDES-CBC` algorithm is not supported for the PKCS#8 format.

Because the obsolete pbeWithMD5AndDES-CBC algorithm does not authenticate the ciphertext, it is vulnerable to padding oracle attacks that can let an attacker recover the plaintext.

> ⚠️ **CAUTION**
>
> This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see [Manage Secrets](https://docs.redpanda.com/cloud-data-platform/develop/connect/configuration/secret-management/) before adding it to your configuration.

**Type**: `string`

**Default**: `""`

```yaml
# Examples:
password: foo

# ---

password: ${KEY_PASSWORD}
```

### [](#http-tls-enable_renegotiation)`http.tls.enable_renegotiation`

Whether to allow the remote server to repeatedly request renegotiation. Enable this option if you’re seeing the error message `local error: tls: no renegotiation`.

**Type**: `bool`

**Default**: `false`

### [](#http-tls-enabled)`http.tls.enabled`

Whether custom TLS settings are enabled.

**Type**: `bool`

**Default**: `false`

### [](#http-tls-root_cas)`http.tls.root_cas`

An optional root certificate authority to use. This is a string, representing a certificate chain from the parent trusted root certificate, to possible intermediate signing certificates, to the host certificate.

> ⚠️ **CAUTION**
>
> This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see [Manage Secrets](https://docs.redpanda.com/cloud-data-platform/develop/connect/configuration/secret-management/) before adding it to your configuration.

**Type**: `string`

**Default**: `""`

```yaml
# Examples:
root_cas: |-
  -----BEGIN CERTIFICATE-----
  ...
  -----END CERTIFICATE-----
```

### [](#http-tls-root_cas_file)`http.tls.root_cas_file`

An optional path of a root certificate authority file to use. This is a file, often with a .pem extension, containing a certificate chain from the parent trusted root certificate, to possible intermediate signing certificates, to the host certificate.

**Type**: `string`

**Default**: `""`

```yaml
# Examples:
root_cas_file: ./root_cas.pem
```

### [](#http-tls-skip_cert_verify)`http.tls.skip_cert_verify`

Whether to skip server side certificate verification.

**Type**: `bool`

**Default**: `false`

### [](#http-tps_burst)`http.tps_burst`

Maximum burst size for rate limiting.

**Type**: `int`

**Default**: `1`

### [](#http-tps_limit)`http.tps_limit`

Rate limit in requests per second. 0 disables rate limiting.

**Type**: `float`

**Default**: `0`

### [](#max_parallel_snapshot_objects)`max_parallel_snapshot_objects`

Number of sObjects snapshotted concurrently during the REST snapshot phase. Each in-flight snapshot consumes one HTTP connection and Salesforce API call quota. Default 1 serializes the work — raise when snapshotting many sObjects and your API limits permit.

**Type**: `int`

**Default**: `1`

### [](#org_url)`org_url`

Salesforce instance base URL for your org, protocol included and no trailing slash. Used as the base for both the OAuth token endpoint and REST queries. Production orgs use `[https://{my-domain}.my.salesforce.com](https://{my-domain}.my.salesforce.com)`; sandboxes use `[https://{my-domain}.sandbox.my.salesforce.com](https://{my-domain}.sandbox.my.salesforce.com)`. Legacy instance URLs (`[https://na123.salesforce.com](https://na123.salesforce.com)`) still work but My Domain URLs are strongly recommended by Salesforce.

**Type**: `string`

```yaml
# Examples:
org_url: https://acme.my.salesforce.com

# ---

org_url: https://acme--staging.sandbox.my.salesforce.com
```

### [](#replay_preset)`replay_preset`

Initial replay position used per topic only on first run (when no checkpoint exists in the cache); ignored once a topic’s replay ID has been written.

-   `latest`: Start from new events only; any changes between prior run and Connect are skipped.

-   `earliest`: Replay from the retention start (24h standard, 72h with enhanced retention). Use to recover missed events after outages.


**Type**: `string`

**Default**: `latest`

**Options**: `latest`, `earliest`

### [](#snapshot_max_batch_size)`snapshot_max_batch_size`

Page size for the REST snapshot query — records per `/query` response. Must be between 200 and 2000 per Salesforce REST API limits. Larger pages reduce HTTP round trips; smaller pages reduce peak memory per fetch.

**Type**: `int`

**Default**: `2000`

```yaml
# Examples:
snapshot_max_batch_size: 2000

# ---

snapshot_max_batch_size: 500
```

### [](#stream_batch_size)`stream_batch_size`

Number of events requested per gRPC `Fetch` call, per topic. Higher values improve throughput at the cost of peak batch memory; lower values give steadier latency under load.

**Type**: `int`

**Default**: `100`

```yaml
# Examples:
stream_batch_size: 100

# ---

stream_batch_size: 500
```

### [](#stream_snapshot)`stream_snapshot`

When true (default), paginate a full REST snapshot of every CDC sObject in `topics` before opening any streaming subscription. When false, skip the snapshot and start streaming immediately. Platform Event topics (`/event/…​`) are always skipped — they have no REST equivalent.

**Type**: `bool`

**Default**: `true`

### [](#topics)`topics[]`

Pub/Sub topics to subscribe to. Each entry is one of: a bare sObject name (`Account` → `/data/AccountChangeEvent`), an explicit CDC channel (`/data/AccountChangeEvent`), the CDC firehose (`/data/ChangeEvents`), or a Platform Event topic (`/event/Order__e`, `/event/LoginEventStream`). Each topic gets its own gRPC subscription with an independent replay cursor.

**Type**: `array`

```yaml
# Examples:
topics:
  - Account
  - Contact

# ---

topics:
  - /data/ChangeEvents

# ---

topics:
  - Account
  - /event/Order__e

# ---

topics:
  - Opportunity
  - MyCustom__c
  - /event/Sync_Requested__e
```