FerricStore (ferricstore v0.9.1)

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Module-based cache instances for FerricStore.

Each module that calls use FerricStore gets a local direct cache instance with its own shards, ETS tables, data directory, and config. The default application instance owns the Raft system.

Usage

defmodule MyApp.Cache do
  use FerricStore,
    data_dir: "/data/cache",
    shard_count: 4,
    max_memory: "1GB"
end

# In your supervision tree:
children = [MyApp.Cache]

# Then use it:
MyApp.Cache.set("key", "value")
{:ok, "value"} = MyApp.Cache.get("key")

Multiple instances

defmodule MyApp.Sessions do
  use FerricStore,
    data_dir: "/data/sessions",
    shard_count: 2
end

MyApp.Cache.set("page:home", html)
MyApp.Sessions.set("sess:abc", session_data)

Options

  • :data_dir — base directory for Bitcask data files (required)
  • :shard_count — number of shards (default: 4)
  • :max_memory_bytes — maximum memory budget (default: 1GB)
  • :keydir_max_ram — maximum ETS keydir memory (default: 256MB)

  • :eviction_policy — :volatile_lfu | :allkeys_lfu | :noeviction (default: :volatile_lfu)

  • :hot_cache_max_value_size — max value size for ETS caching (default: 65536)
  • :read_sample_rate — LFU sampling rate (default: 100)
  • :flow_retention_sweeper — per-instance Flow timeout/retention sweeper options such as :initial_delay_ms, :interval_ms, and :limit

Summary

Types

cas_opts()
fetch_or_compute_opts()
get_opts()
key()
set_opts()
value()
write_error()
zrange_opts()

Functions

append(key, suffix)
await_ready(opts \\ [])

Blocks until FerricStore is fully ready to serve requests.

batch_get(keys)
batch_set(kv_pairs)
bf_add(key, element)
bf_card(key)
bf_exists(key, element)
bf_info(key)
bf_madd(key, elements)
bf_mexists(key, elements)
bf_reserve(key, error_rate, capacity)
bitcount(key, opts \\ [])
bitop(op, dest_key, source_keys)
bitpos(key, bit_value, opts \\ [])
cas(key, expected, new_value, opts \\ [])
cf_add(key, element)
cf_addnx(key, element)
cf_count(key, element)
cf_del(key, element)
cf_exists(key, element)
cf_info(key)
cf_mexists(key, elements)
cf_reserve(key, capacity)
cms_incrby(key, pairs)
cms_info(key)
cms_initbydim(key, width, depth)
cms_initbyprob(key, error, probability)
cms_query(key, elements)
copy(source, destination, opts \\ [])
dbsize()

See FerricStore.API.Generic.dbsize/0.

decr(key)
decr_by(key, amount)
del(key)
echo(message)

See FerricStore.API.System.echo/1.

exists(key)
expire(key, ttl_ms)
expireat(key, unix_ts_seconds)
expiretime(key)
extend(key, owner, ttl_ms)
fetch_or_compute(key, opts)
fetch_or_compute_error(key, message, opts)
fetch_or_compute_result(key, value, opts)
flow_approval_approve(id, opts \\ [])

See FerricStore.API.Flow.flow_approval_approve/2.

flow_approval_get(id, opts \\ [])

See FerricStore.API.Flow.flow_approval_get/2.

flow_approval_list(opts \\ [])

See FerricStore.API.Flow.flow_approval_list/1.

flow_approval_reject(id, opts \\ [])

See FerricStore.API.Flow.flow_approval_reject/2.

flow_approval_request(id, opts \\ [])

See FerricStore.API.Flow.flow_approval_request/2.

flow_attribute_values(type, attr_name, opts \\ [])

See FerricStore.API.Flow.flow_attribute_values/3.

flow_attributes(type, opts \\ [])

See FerricStore.API.Flow.flow_attributes/2.

flow_budget_commit(scope, reservation_id, actual_amount, opts \\ [])

See FerricStore.API.Flow.flow_budget_commit/4.

flow_budget_get(scope, opts \\ [])

See FerricStore.API.Flow.flow_budget_get/2.

flow_budget_list(opts \\ [])

See FerricStore.API.Flow.flow_budget_list/1.

flow_budget_release(scope, reservation_id, opts \\ [])

See FerricStore.API.Flow.flow_budget_release/3.

flow_budget_reserve(scope, amount, opts \\ [])

See FerricStore.API.Flow.flow_budget_reserve/3.

flow_by_correlation(correlation_id, opts \\ [])

See FerricStore.API.Flow.flow_by_correlation/2.

flow_by_parent(parent_flow_id, opts \\ [])

See FerricStore.API.Flow.flow_by_parent/2.

flow_by_root(root_flow_id, opts \\ [])

See FerricStore.API.Flow.flow_by_root/2.

flow_cancel(id, opts \\ [])

See FerricStore.API.Flow.flow_cancel/2.

flow_cancel_many(partition_key, items, opts \\ [])

See FerricStore.API.Flow.flow_cancel_many/3.

flow_circuit_close(scope, opts \\ [])

See FerricStore.API.Flow.flow_circuit_close/2.

flow_circuit_get(scope, opts \\ [])

See FerricStore.API.Flow.flow_circuit_get/2.

flow_circuit_list(opts \\ [])

See FerricStore.API.Flow.flow_circuit_list/1.

flow_circuit_open(scope, opts \\ [])

See FerricStore.API.Flow.flow_circuit_open/2.

flow_claim_due(type, opts)

See FerricStore.API.Flow.flow_claim_due/2.

flow_complete(id, lease_token, opts \\ [])

See FerricStore.API.Flow.flow_complete/3.

flow_complete_many(partition_key, items, opts \\ [])

See FerricStore.API.Flow.flow_complete_many/3.

flow_create(id, opts)

See FerricStore.API.Flow.flow_create/2.

flow_create_many(partition_key, items, opts \\ [])

See FerricStore.API.Flow.flow_create_many/3.

flow_effect_compensate(id, effect_key, opts \\ [])

See FerricStore.API.Flow.flow_effect_compensate/3.

flow_effect_confirm(id, effect_key, opts \\ [])

See FerricStore.API.Flow.flow_effect_confirm/3.

flow_effect_fail(id, effect_key, opts \\ [])

See FerricStore.API.Flow.flow_effect_fail/3.

flow_effect_get(id, effect_key, opts \\ [])

See FerricStore.API.Flow.flow_effect_get/3.

flow_effect_reserve(id, effect_key, effect_type, opts \\ [])

See FerricStore.API.Flow.flow_effect_reserve/4.

flow_extend_lease(id, lease_token, opts \\ [])

See FerricStore.API.Flow.flow_extend_lease/3.

flow_fail(id, lease_token, opts \\ [])

See FerricStore.API.Flow.flow_fail/3.

flow_fail_many(partition_key, items, opts \\ [])

See FerricStore.API.Flow.flow_fail_many/3.

flow_failures(type, opts \\ [])

See FerricStore.API.Flow.flow_failures/2.

flow_get(id, opts \\ [])

See FerricStore.API.Flow.flow_get/2.

flow_governance_ledger(id, opts \\ [])

See FerricStore.API.Flow.flow_governance_ledger/2.

flow_governance_overview(opts \\ [])

See FerricStore.API.Flow.flow_governance_overview/1.

flow_history(id, opts \\ [])

See FerricStore.API.Flow.flow_history/2.

flow_info(type, opts \\ [])

See FerricStore.API.Flow.flow_info/2.

flow_limit_get(scope, opts \\ [])

See FerricStore.API.Flow.flow_limit_get/2.

flow_limit_lease(scope, opts \\ [])

See FerricStore.API.Flow.flow_limit_lease/2.

flow_limit_list(opts \\ [])

See FerricStore.API.Flow.flow_limit_list/1.

flow_limit_release(scope, opts \\ [])

See FerricStore.API.Flow.flow_limit_release/2.

flow_limit_spend(scope, opts \\ [])

See FerricStore.API.Flow.flow_limit_spend/2.

flow_list(type, opts \\ [])

See FerricStore.API.Flow.flow_list/2.

flow_policy_get(type, opts \\ [])

See FerricStore.API.Flow.flow_policy_get/2.

flow_policy_set(type, opts)

See FerricStore.API.Flow.flow_policy_set/2.

flow_reclaim(type, opts)

See FerricStore.API.Flow.flow_reclaim/2.

flow_retention_cleanup(opts \\ [])

See FerricStore.API.Flow.flow_retention_cleanup/1.

flow_retry(id, lease_token, opts)

See FerricStore.API.Flow.flow_retry/3.

flow_retry_many(partition_key, items, opts \\ [])

See FerricStore.API.Flow.flow_retry_many/3.

flow_rewind(id, opts)

See FerricStore.API.Flow.flow_rewind/2.

flow_run_steps_many(items, opts \\ [])

See FerricStore.API.Flow.flow_run_steps_many/2.

flow_schedule_create(id, opts)

See FerricStore.API.Flow.flow_schedule_create/2.

flow_schedule_delete(id, opts \\ [])

See FerricStore.API.Flow.flow_schedule_delete/2.

flow_schedule_fire(id, opts \\ [])

See FerricStore.API.Flow.flow_schedule_fire/2.

flow_schedule_fire_due(opts \\ [])

See FerricStore.API.Flow.flow_schedule_fire_due/1.

flow_schedule_get(id, opts \\ [])

See FerricStore.API.Flow.flow_schedule_get/2.

flow_schedule_list(opts \\ [])

See FerricStore.API.Flow.flow_schedule_list/1.

flow_schedule_pause(id, opts \\ [])

See FerricStore.API.Flow.flow_schedule_pause/2.

flow_schedule_resume(id, opts \\ [])

See FerricStore.API.Flow.flow_schedule_resume/2.

flow_search(opts \\ [])

See FerricStore.API.Flow.flow_search/1.

flow_signal(id, opts)

See FerricStore.API.Flow.flow_signal/2.

flow_spawn_children(parent_id, children, opts \\ [])

See FerricStore.API.Flow.flow_spawn_children/3.

flow_start_and_claim(id, type, initial_state, opts \\ [])

See FerricStore.API.Flow.flow_start_and_claim/4.

flow_stats(type, opts \\ [])

See FerricStore.API.Flow.flow_stats/2.

flow_step_continue(id, lease_token, from_state, to_state, opts \\ [])

See FerricStore.API.Flow.flow_step_continue/5.

flow_stuck(type, opts \\ [])

See FerricStore.API.Flow.flow_stuck/2.

flow_terminals(type, opts \\ [])

See FerricStore.API.Flow.flow_terminals/2.

flow_transition(id, from_state, to_state, opts \\ [])

See FerricStore.API.Flow.flow_transition/4.

flow_transition_many(partition_key, from_state, to_state, items, opts \\ [])

See FerricStore.API.Flow.flow_transition_many/5.

flow_value_mget(refs, opts \\ [])

See FerricStore.API.Flow.flow_value_mget/2.

flow_value_put(value, opts \\ [])

See FerricStore.API.Flow.flow_value_put/2.

flushall()

See FerricStore.API.System.flushall/0.

flushdb()

See FerricStore.API.Generic.flushdb/0.

geoadd(key, members)
geodist(key, member1, member2, unit \\ "m")
geohash(key, members)
geopos(key, members)
get(key, opts \\ [])
getbit(key, offset)
getdel(key)
getex(key, opts \\ [])
getrange(key, start, stop)
getset(key, value)
hdel(key, fields)
health()

Returns the current health status without blocking.

hexists(key, field)
hget(key, field)
hgetall(key)
hincrby(key, field, amount)
hincrbyfloat(key, field, amount)
hkeys(key)
hlen(key)
hmget(key, fields)
hrandfield(key, count \\ nil)
hset(key, fields)
hsetnx(key, field, value)
hstrlen(key, field)
hvals(key)
incr(key)
incr_by(key, amount)
incr_by_float(key, amount)
keys(pattern \\ "*")

See FerricStore.API.Generic.keys/1.

lindex(key, index)
linsert(key, direction, pivot, element)
llen(key)
lmove(source, destination, from_dir, to_dir)
lock(key, owner, ttl_ms)
lpop(key, count \\ 1)
lpos(key, element, opts \\ [])
lpush(key, elements)
lrange(key, start, stop)
lrem(key, count, element)
lset(key, index, element)
mget(keys)
mset(pairs)
msetnx(pairs)
multi(fun)

See FerricStore.API.System.multi/1.

packed_batch_get(packed_keys)

See FerricStore.API.System.packed_batch_get/1.

persist(key)
pexpire(key, ttl_ms)
pexpireat(key, unix_ts_ms)
pexpiretime(key)
pfadd(key, elements)
pfcount(keys)
pfmerge(dest_key, source_keys)
ping()

See FerricStore.API.System.ping/0.

pipeline(fun)

See FerricStore.API.System.pipeline/1.

psetex(key, milliseconds, value)
pttl(key)
randomkey()

See FerricStore.API.Generic.randomkey/0.

ratelimit_add(key, window_ms, max, count \\ 1)
ready?()

Returns true if FerricStore is ready to serve requests.

rename(source, destination)
renamenx(source, destination)
rpop(key, count \\ 1)
rpush(key, elements)
sadd(key, members)
scard(key)
sdiff(keys)
sdiffstore(destination, keys)
set(key, value, opts \\ [])
setbit(key, offset, bit_value)
setex(key, seconds, value)
setnx(key, value)
setrange(key, offset, value)
shutdown()

Gracefully shuts down FerricStore, flushing all pending data to disk.

sinter(keys)
sintercard(keys, opts \\ [])
sinterstore(destination, keys)
sismember(key, member)
smembers(key)
smismember(key, members)
spop(key, count \\ nil)
srandmember(key, count \\ nil)
srem(key, members)
strlen(key)
sunion(keys)
sunionstore(destination, keys)
tdigest_add(key, values)
tdigest_byrank(key, ranks)
tdigest_byrevrank(key, ranks)
tdigest_cdf(key, values)
tdigest_create(key)
tdigest_info(key)
tdigest_max(key)
tdigest_min(key)
tdigest_quantile(key, quantiles)
tdigest_rank(key, values)
tdigest_reset(key)
tdigest_revrank(key, values)
tdigest_trimmed_mean(key, lo, hi)
topk_add(key, elements)
topk_info(key)
topk_list(key)
topk_query(key, elements)
topk_reserve(key, k)
ttl(key)
type(key)
unlock(key, owner)
xadd(key, fields)
xlen(key)
xrange(key, start, stop, opts \\ [])
xrevrange(key, stop, start, opts \\ [])
xtrim(key, opts)
zadd(key, score_member_pairs)
zcard(key)
zcount(key, min, max)
zincrby(key, increment, member)
zmscore(key, members)
zpopmax(key, count \\ 1)
zpopmin(key, count \\ 1)
zrandmember(key, count \\ nil)
zrange(key, start, stop, opts \\ [])
zrangebyscore(key, min, max, opts \\ [])
zrank(key, member)
zrem(key, members)
zrevrank(key, member)
zscore(key, member)

Types

cas_opts()

@type cas_opts() :: [{:ttl, non_neg_integer()}]

fetch_or_compute_opts()

@type fetch_or_compute_opts() :: [ttl: pos_integer(), hint: binary()]

get_opts()

@type get_opts() :: [{:cache, atom()}]

key()

@type key() :: binary()

set_opts()

@type set_opts() :: [
  ttl: non_neg_integer(),
  exat: pos_integer(),
  pxat: pos_integer(),
  nx: boolean(),
  xx: boolean(),
  get: boolean(),
  keepttl: boolean(),
  cache: atom()
]

value()

@type value() :: binary()

write_error()

@type write_error() :: {:error, binary() | {:timeout, :unknown_outcome}}

zrange_opts()

@type zrange_opts() :: [{:withscores, boolean()}]

Functions

append(key, suffix)

await_ready(opts \\ [])

@spec await_ready(keyword()) :: :ok

Blocks until FerricStore is fully ready to serve requests.

Polls Health.check/0 until all shards are alive and all Raft leaders are elected. Returns :ok when ready, raises on timeout.

Call this in your application's start/2 after FerricStore is in your supervision tree, or in test setup, to ensure writes won't fail.

Options

  • :timeout - max milliseconds to wait (default: 30_000)
  • :interval - polling interval in ms (default: 100)

Examples

# In your Application.start/2:
def start(_type, _args) do
  children = [
    {FerricStore, []},
    MyApp.Repo,
    MyAppWeb.Endpoint
  ]
  opts = [strategy: :one_for_one, name: MyApp.Supervisor]
  {:ok, pid} = Supervisor.start_link(children, opts)

  FerricStore.await_ready()
  {:ok, pid}
end

# With custom timeout:
FerricStore.await_ready(timeout: 60_000)

batch_get(keys)

batch_set(kv_pairs)

@spec batch_set([{binary(), binary()}]) :: [:ok | write_error()] | write_error()

bf_add(key, element)

bf_card(key)

bf_exists(key, element)

bf_info(key)

bf_madd(key, elements)

bf_mexists(key, elements)

bf_reserve(key, error_rate, capacity)

bitcount(key, opts \\ [])

bitop(op, dest_key, source_keys)

bitpos(key, bit_value, opts \\ [])

cas(key, expected, new_value, opts \\ [])

cf_add(key, element)

cf_addnx(key, element)

cf_count(key, element)

cf_del(key, element)

cf_exists(key, element)

cf_info(key)

cf_mexists(key, elements)

cf_reserve(key, capacity)

cms_incrby(key, pairs)

cms_info(key)

cms_initbydim(key, width, depth)

cms_initbyprob(key, error, probability)

cms_query(key, elements)

copy(source, destination, opts \\ [])

dbsize()

See FerricStore.API.Generic.dbsize/0.

decr(key)

decr_by(key, amount)

del(key)

echo(message)

See FerricStore.API.System.echo/1.

exists(key)

expire(key, ttl_ms)

expireat(key, unix_ts_seconds)

expiretime(key)

extend(key, owner, ttl_ms)

fetch_or_compute(key, opts)

fetch_or_compute_error(key, message, opts)

fetch_or_compute_result(key, value, opts)

flow_approval_approve(id, opts \\ [])

See FerricStore.API.Flow.flow_approval_approve/2.

flow_approval_get(id, opts \\ [])

See FerricStore.API.Flow.flow_approval_get/2.

flow_approval_list(opts \\ [])

See FerricStore.API.Flow.flow_approval_list/1.

flow_approval_reject(id, opts \\ [])

See FerricStore.API.Flow.flow_approval_reject/2.

flow_approval_request(id, opts \\ [])

See FerricStore.API.Flow.flow_approval_request/2.

flow_attribute_values(type, attr_name, opts \\ [])

See FerricStore.API.Flow.flow_attribute_values/3.

flow_attributes(type, opts \\ [])

See FerricStore.API.Flow.flow_attributes/2.

flow_budget_commit(scope, reservation_id, actual_amount, opts \\ [])

See FerricStore.API.Flow.flow_budget_commit/4.

flow_budget_get(scope, opts \\ [])

See FerricStore.API.Flow.flow_budget_get/2.

flow_budget_list(opts \\ [])

See FerricStore.API.Flow.flow_budget_list/1.

flow_budget_release(scope, reservation_id, opts \\ [])

See FerricStore.API.Flow.flow_budget_release/3.

flow_budget_reserve(scope, amount, opts \\ [])

See FerricStore.API.Flow.flow_budget_reserve/3.

flow_by_correlation(correlation_id, opts \\ [])

See FerricStore.API.Flow.flow_by_correlation/2.

flow_by_parent(parent_flow_id, opts \\ [])

See FerricStore.API.Flow.flow_by_parent/2.

flow_by_root(root_flow_id, opts \\ [])

See FerricStore.API.Flow.flow_by_root/2.

flow_cancel(id, opts \\ [])

See FerricStore.API.Flow.flow_cancel/2.

flow_cancel_many(partition_key, items, opts \\ [])

See FerricStore.API.Flow.flow_cancel_many/3.

flow_circuit_close(scope, opts \\ [])

See FerricStore.API.Flow.flow_circuit_close/2.

flow_circuit_get(scope, opts \\ [])

See FerricStore.API.Flow.flow_circuit_get/2.

flow_circuit_list(opts \\ [])

See FerricStore.API.Flow.flow_circuit_list/1.

flow_circuit_open(scope, opts \\ [])

See FerricStore.API.Flow.flow_circuit_open/2.

flow_claim_due(type, opts)

See FerricStore.API.Flow.flow_claim_due/2.

flow_complete(id, lease_token, opts \\ [])

See FerricStore.API.Flow.flow_complete/3.

flow_complete_many(partition_key, items, opts \\ [])

See FerricStore.API.Flow.flow_complete_many/3.

flow_create(id, opts)

See FerricStore.API.Flow.flow_create/2.

flow_create_many(partition_key, items, opts \\ [])

See FerricStore.API.Flow.flow_create_many/3.

flow_effect_compensate(id, effect_key, opts \\ [])

See FerricStore.API.Flow.flow_effect_compensate/3.

flow_effect_confirm(id, effect_key, opts \\ [])

See FerricStore.API.Flow.flow_effect_confirm/3.

flow_effect_fail(id, effect_key, opts \\ [])

See FerricStore.API.Flow.flow_effect_fail/3.

flow_effect_get(id, effect_key, opts \\ [])

See FerricStore.API.Flow.flow_effect_get/3.

flow_effect_reserve(id, effect_key, effect_type, opts \\ [])

See FerricStore.API.Flow.flow_effect_reserve/4.

flow_extend_lease(id, lease_token, opts \\ [])

See FerricStore.API.Flow.flow_extend_lease/3.

flow_fail(id, lease_token, opts \\ [])

See FerricStore.API.Flow.flow_fail/3.

flow_fail_many(partition_key, items, opts \\ [])

See FerricStore.API.Flow.flow_fail_many/3.

flow_failures(type, opts \\ [])

See FerricStore.API.Flow.flow_failures/2.

flow_get(id, opts \\ [])

See FerricStore.API.Flow.flow_get/2.

flow_governance_ledger(id, opts \\ [])

See FerricStore.API.Flow.flow_governance_ledger/2.

flow_governance_overview(opts \\ [])

See FerricStore.API.Flow.flow_governance_overview/1.

flow_history(id, opts \\ [])

See FerricStore.API.Flow.flow_history/2.

flow_info(type, opts \\ [])

See FerricStore.API.Flow.flow_info/2.

flow_limit_get(scope, opts \\ [])

See FerricStore.API.Flow.flow_limit_get/2.

flow_limit_lease(scope, opts \\ [])

See FerricStore.API.Flow.flow_limit_lease/2.

flow_limit_list(opts \\ [])

See FerricStore.API.Flow.flow_limit_list/1.

flow_limit_release(scope, opts \\ [])

See FerricStore.API.Flow.flow_limit_release/2.

flow_limit_spend(scope, opts \\ [])

See FerricStore.API.Flow.flow_limit_spend/2.

flow_list(type, opts \\ [])

See FerricStore.API.Flow.flow_list/2.

flow_policy_get(type, opts \\ [])

See FerricStore.API.Flow.flow_policy_get/2.

flow_policy_set(type, opts)

See FerricStore.API.Flow.flow_policy_set/2.

flow_reclaim(type, opts)

See FerricStore.API.Flow.flow_reclaim/2.

flow_retention_cleanup(opts \\ [])

See FerricStore.API.Flow.flow_retention_cleanup/1.

flow_retry(id, lease_token, opts)

See FerricStore.API.Flow.flow_retry/3.

flow_retry_many(partition_key, items, opts \\ [])

See FerricStore.API.Flow.flow_retry_many/3.

flow_rewind(id, opts)

See FerricStore.API.Flow.flow_rewind/2.

flow_run_steps_many(items, opts \\ [])

See FerricStore.API.Flow.flow_run_steps_many/2.

flow_schedule_create(id, opts)

See FerricStore.API.Flow.flow_schedule_create/2.

flow_schedule_delete(id, opts \\ [])

See FerricStore.API.Flow.flow_schedule_delete/2.

flow_schedule_fire(id, opts \\ [])

See FerricStore.API.Flow.flow_schedule_fire/2.

flow_schedule_fire_due(opts \\ [])

See FerricStore.API.Flow.flow_schedule_fire_due/1.

flow_schedule_get(id, opts \\ [])

See FerricStore.API.Flow.flow_schedule_get/2.

flow_schedule_list(opts \\ [])

See FerricStore.API.Flow.flow_schedule_list/1.

flow_schedule_pause(id, opts \\ [])

See FerricStore.API.Flow.flow_schedule_pause/2.

flow_schedule_resume(id, opts \\ [])

See FerricStore.API.Flow.flow_schedule_resume/2.

flow_search(opts \\ [])

See FerricStore.API.Flow.flow_search/1.

flow_signal(id, opts)

See FerricStore.API.Flow.flow_signal/2.

flow_spawn_children(parent_id, children, opts \\ [])

See FerricStore.API.Flow.flow_spawn_children/3.

flow_start_and_claim(id, type, initial_state, opts \\ [])

See FerricStore.API.Flow.flow_start_and_claim/4.

flow_stats(type, opts \\ [])

See FerricStore.API.Flow.flow_stats/2.

flow_step_continue(id, lease_token, from_state, to_state, opts \\ [])

See FerricStore.API.Flow.flow_step_continue/5.

flow_stuck(type, opts \\ [])

See FerricStore.API.Flow.flow_stuck/2.

flow_terminals(type, opts \\ [])

See FerricStore.API.Flow.flow_terminals/2.

flow_transition(id, from_state, to_state, opts \\ [])

See FerricStore.API.Flow.flow_transition/4.

flow_transition_many(partition_key, from_state, to_state, items, opts \\ [])

See FerricStore.API.Flow.flow_transition_many/5.

flow_value_mget(refs, opts \\ [])

See FerricStore.API.Flow.flow_value_mget/2.

flow_value_put(value, opts \\ [])

See FerricStore.API.Flow.flow_value_put/2.

flushall()

@spec flushall() :: :ok | {:error, term()}

See FerricStore.API.System.flushall/0.

flushdb()

See FerricStore.API.Generic.flushdb/0.

geoadd(key, members)

geodist(key, member1, member2, unit \\ "m")

geohash(key, members)

geopos(key, members)

get(key, opts \\ [])

getbit(key, offset)

getdel(key)

getex(key, opts \\ [])

getrange(key, start, stop)

getset(key, value)

hdel(key, fields)

health()

@spec health() :: Ferricstore.Health.health_result()

Returns the current health status without blocking.

Examples

iex> FerricStore.health()
%{status: :ok, shard_count: 4, shards: [...], uptime_seconds: 120}

hexists(key, field)

hget(key, field)

hgetall(key)

hincrby(key, field, amount)

hincrbyfloat(key, field, amount)

hkeys(key)

hlen(key)

hmget(key, fields)

hrandfield(key, count \\ nil)

hset(key, fields)

hsetnx(key, field, value)

hstrlen(key, field)

hvals(key)

incr(key)

incr_by(key, amount)

incr_by_float(key, amount)

keys(pattern \\ "*")

See FerricStore.API.Generic.keys/1.

lindex(key, index)

linsert(key, direction, pivot, element)

llen(key)

lmove(source, destination, from_dir, to_dir)

lock(key, owner, ttl_ms)

lpop(key, count \\ 1)

lpos(key, element, opts \\ [])

lpush(key, elements)

lrange(key, start, stop)

lrem(key, count, element)

lset(key, index, element)

mget(keys)

mset(pairs)

msetnx(pairs)

multi(fun)

See FerricStore.API.System.multi/1.

packed_batch_get(packed_keys)

See FerricStore.API.System.packed_batch_get/1.

persist(key)

pexpire(key, ttl_ms)

pexpireat(key, unix_ts_ms)

pexpiretime(key)

pfadd(key, elements)

pfcount(keys)

pfmerge(dest_key, source_keys)

ping()

See FerricStore.API.System.ping/0.

pipeline(fun)

See FerricStore.API.System.pipeline/1.

psetex(key, milliseconds, value)

pttl(key)

randomkey()

See FerricStore.API.Generic.randomkey/0.

ratelimit_add(key, window_ms, max, count \\ 1)

ready?()

@spec ready?() :: boolean()

Returns true if FerricStore is ready to serve requests.

Examples

iex> FerricStore.ready?()
true

rename(source, destination)

renamenx(source, destination)

rpop(key, count \\ 1)

rpush(key, elements)

sadd(key, members)

scard(key)

sdiff(keys)

sdiffstore(destination, keys)

set(key, value, opts \\ [])

@spec set(key(), value(), set_opts()) ::
  :ok | {:ok, value() | nil} | nil | write_error()

setbit(key, offset, bit_value)

setex(key, seconds, value)

setnx(key, value)

setrange(key, offset, value)

shutdown()

@spec shutdown() :: :ok

Gracefully shuts down FerricStore, flushing all pending data to disk.

Flushes Raft batchers, BitcaskWriters, shard pending writes, and triggers a WAL rollover. Call before stopping the application to ensure zero data loss.

Examples

FerricStore.shutdown()
Application.stop(:ferricstore)

sinter(keys)

sintercard(keys, opts \\ [])

sinterstore(destination, keys)

sismember(key, member)

smembers(key)

smismember(key, members)

spop(key, count \\ nil)

srandmember(key, count \\ nil)

srem(key, members)

strlen(key)

sunion(keys)

sunionstore(destination, keys)

tdigest_add(key, values)

tdigest_byrank(key, ranks)

tdigest_byrevrank(key, ranks)

tdigest_cdf(key, values)

tdigest_create(key)

tdigest_info(key)

tdigest_max(key)

tdigest_min(key)

tdigest_quantile(key, quantiles)

tdigest_rank(key, values)

tdigest_reset(key)

tdigest_revrank(key, values)

tdigest_trimmed_mean(key, lo, hi)

topk_add(key, elements)

topk_info(key)

topk_list(key)

topk_query(key, elements)

topk_reserve(key, k)

ttl(key)

type(key)

unlock(key, owner)

xadd(key, fields)

xlen(key)

xrange(key, start, stop, opts \\ [])

xrevrange(key, stop, start, opts \\ [])

xtrim(key, opts)

zadd(key, score_member_pairs)

zcard(key)

zcount(key, min, max)

zincrby(key, increment, member)

zmscore(key, members)

zpopmax(key, count \\ 1)

zpopmin(key, count \\ 1)

zrandmember(key, count \\ nil)

zrange(key, start, stop, opts \\ [])

zrangebyscore(key, min, max, opts \\ [])

zrank(key, member)

zrem(key, members)

zrevrank(key, member)

zscore(key, member)